[{"key":"ab_urbe_condita","display_name":"Ab urbe condita","display_name_key":"calendar_display_name_ab_urbe_condita","alias_keys":[],"aliases":[],"system_kind":"era","timezone_policy":"sensitive","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"single_date","profile_family":"auc_epoch_convention","default_profile":"gregorian_year_offset","available_profiles":["gregorian_year_offset","varronian_julian_anniversary"],"profile_labels":{"gregorian_year_offset":"Gregorian year-offset","varronian_julian_anniversary":"Varronian Julian anniversary"},"profile_notes":{"gregorian_year_offset":"Compatibility profile: Gregorian month/day projection with January 1 year boundary and 753 BCE offset; not source-native Roman dating.","varronian_julian_anniversary":"Source-backed Varronian anniversary convention: AUC year changes at Parilia, Julian 21 April, while still functioning as an era label rather than a full Roman calendar."},"projection_basis":"jdn","algorithm_id":"auc_profiled_epoch_convention_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_ab_urbe_condita","approximation_class":"profiled_era_label_projection","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":"gregorian_or_julian_profile","base_calendar":"roman","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Ab urbe condita is an era label, not a complete standalone Roman date converter. The default profile preserves the older Gregorian year-offset projection; the Varronian profile uses the source-backed Parilia / Julian 21 April anniversary convention.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Profiled AUC era-label surface with Gregorian compatibility and Varronian Julian-anniversary options.","end_user_description":"\"Ab urbe condita\" means \"from the founding of the City\"; \"anno urbis conditae\" means \"in the year from the City's founding.\" The conventional Varronian epoch is Rome's birthday, Parilia, on 21 April 753 BCE, but this implementation keeps the Gregorian month and day and adds 753 to the Gregorian astronomical year. That is useful for consistent conversion and parsing, but it should be described as a Gregorian AUC projection. Ancient Roman historical sources and commemorations could count AUC from 21 April, while ordinary documents commonly used consular dating. ([Merriam-Webster][8])","short_description":"AUC counts years from the traditional founding of Rome. This converter's current AUC surface is a modern Gregorian year-offset projection, not a native Roman calendar.","longer_explanation_eng":"\"Ab urbe condita\" means \"from the founding of the City\"; \"anno urbis conditae\" means \"in the year from the City's founding.\" The conventional Varronian epoch is Rome's birthday, Parilia, on 21 April 753 BCE, but this implementation keeps the Gregorian month and day and adds 753 to the Gregorian astronomical year. That is useful for consistent conversion and parsing, but it should be described as a Gregorian AUC projection. Ancient Roman historical sources and commemorations could count AUC from 21 April, while ordinary documents commonly used consular dating. ([Merriam-Webster][8])","longer_explanation_rus":"«Ab urbe condita» означает «от основания Города», то есть Рима; близкая формула «anno urbis conditae» означает «в году от основания Города». Традиционная варроновская точка отсчёта — день рождения Рима, Парилии, 21 апреля 753 года до н. э. В текущей реализации, однако, сохраняются григорианские месяц и день, а к григорианскому астрономическому году прибавляется 753. Поэтому это удобно как вычислительная проекция, но её не следует называть исторически «родной» древнеримской датой. Для полных русских дат используйте родительный падеж месяца: например, «25 февраля 2776 года AUC» или «25 февраля 2776 года от основания Рима».","short_description_eng":"AUC counts years from the traditional founding of Rome. This converter's current AUC surface is a modern Gregorian year-offset projection, not a native Roman calendar.","short_description_rus":"AUC — счёт лет от традиционной даты основания Рима. Текущая реализация в конвертере — современная григорианская проекция с прибавлением 753 к году, а не собственно древнеримский календарь.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/ab_urbe_condita.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Profiled AUC era-label surface with Gregorian compatibility and Varronian Julian-anniversary options.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"era_projection","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format","profile_scope_note","source_status","warning"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"},"profile_scope_note":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_profile_scope_note"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"},"warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_warning"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"abbasid_era","display_name":"Abbasid Era","display_name_key":"calendar_display_name_abbasid_era","alias_keys":[],"aliases":[],"system_kind":"era","timezone_policy":"canonical","day_boundary":"midnight","canonical_timezone":"Asia/Baghdad","formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"abbasid_era_app_pinned_gregorian_projection_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_abbasid_era","approximation_class":"synthetic_pinned_fixed_anniversary_era_projection","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":"gregorian","base_calendar":"gregorian","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Abbasid Era is retained only as an app-defined comparative Gregorian month/day projection pinned to 750-01-25. The research did not find a documented native Abbasid calendar with this epoch; historically meaningful Abbasid dates usually belong in Islamic/Hijri or source-table contexts.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Synthetic comparative Abbasid year-label projection; useful for orientation, not a source-native Abbasid calendar.","end_user_description":"This converter surface is not a native Abbasid calendar. It is an app-defined Gregorian anniversary projection: the date keeps Gregorian month and day labels, while the year number is shifted around a January 25 anniversary. Historical Abbasid sources are better handled with the Islamic/Hijri calendar or with source-specific chronologies; for example, an Abbasid coin record uses A.H. 164 / A.D. 780, and al-Saffah’s proclamation is source-edited as 12 Rabi II 132 / November 28, 749. ([The Metropolitan Museum of Art][4])","short_description":"A synthetic Abbasid-era label that keeps Gregorian month/day dates and numbers years from a pinned 750-01-25 epoch. It is for comparison, not a historical Abbasid calendar.","longer_explanation_eng":"This converter surface is not a native Abbasid calendar. It is an app-defined Gregorian anniversary projection: the date keeps Gregorian month and day labels, while the year number is shifted around a January 25 anniversary. Historical Abbasid sources are better handled with the Islamic/Hijri calendar or with source-specific chronologies; for example, an Abbasid coin record uses A.H. 164 / A.D. 780, and al-Saffah’s proclamation is source-edited as 12 Rabi II 132 / November 28, 749. ([The Metropolitan Museum of Art][4])","longer_explanation_rus":"Эта поверхность конвертера не является собственным аббасидским календарём. Это заданная приложением григорианская проекция: месяц и день остаются григорианскими, а номер года сдвигается вокруг годовщины 25 января. Исторические аббасидские даты корректнее показывать по календарю хиджры или по конкретному источнику; например, музейная запись аббасидского динара датирует его 164 г. х. / 780 г. н. э., а провозглашение ас-Саффаха в источниковом издании дано как 12 раби II 132 г. х. / 28 ноября 749 г. ([The Metropolitan Museum of Art][4])","short_description_eng":"A synthetic Abbasid-era label that keeps Gregorian month/day dates and numbers years from a pinned 750-01-25 epoch. It is for comparison, not a historical Abbasid calendar.","short_description_rus":"Синтетическая аббасидская метка: месяцы и дни остаются григорианскими, а годы отсчитываются от условной даты 25.01.750. Это сравнительная проекция, а не исторический календарь Аббасидов.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/abbasid_era.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Synthetic comparative Abbasid year-label projection; useful for orientation, not a source-native Abbasid calendar.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"era_projection","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format","profile_scope_note","source_status","warning"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"},"profile_scope_note":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_profile_scope_note"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"},"warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_warning"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"accounting_360_day_calendar","display_name":"360-Day Accounting Convention","display_name_key":"calendar_display_name_accounting_360_day_calendar","alias_keys":[],"aliases":[],"system_kind":"overlay","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"overlay","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"research_corpus_2026_06_accounting_360_day_calendar","approximation_class":"reference_only_day_count_convention","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":"gregorian","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"360-Day Accounting Convention is exposed as a reference-only surface from `research_corpus_2026_06_accounting_360_day_calendar`. The research does not support arbitrary date conversion without a source profile, locality, event record, or edition-specific table.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference-only 360-Day Accounting Convention entry. Public conversion is intentionally disabled until the required profile/source infrastructure exists.","end_user_description":"The 360-day accounting calendar is not a standalone calendar conversion. In accounting and finance, '360-day' usually means a day-count convention: a rule for turning two ordinary dates into an interest/accrual day count or year fraction. Some profiles treat each month as 30 days; others count actual days but divide by 360. Because profiles such as U.S./NASD, European, ISDA, ICMA/basic, 30E/360, and Actual/360 handle month ends and February differently, the app cannot safely convert a single date to or from JDN under this key. The safest public surface is a reference page, or later a profile-explicit date-range calculator.","short_description":"A family of accounting/financial day-count conventions, not a standalone calendar. It cannot safely convert single dates to JDN.","longer_explanation_eng":"The 360-day accounting calendar is not a standalone calendar conversion. In accounting and finance, '360-day' usually means a day-count convention: a rule for turning two ordinary dates into an interest/accrual day count or year fraction. Some profiles treat each month as 30 days; others count actual days but divide by 360. Because profiles such as U.S./NASD, European, ISDA, ICMA/basic, 30E/360, and Actual/360 handle month ends and February differently, the app cannot safely convert a single date to or from JDN under this key. The safest public surface is a reference page, or later a profile-explicit date-range calculator.","longer_explanation_rus":"360-дневный бухгалтерский календарь не является самостоятельной календарной системой для перевода дат. В бухгалтерии и финансах обозначение «360 дней» обычно относится к расчётной конвенции: правилу, которое превращает две обычные календарные даты в число дней начисления или долю года. В одних профилях каждый месяц условно считается 30-дневным, в других фактическое число дней делится на 360. Поскольку профили U.S./NASD, European, ISDA, ICMA/basic, 30E/360 и Actual/360 по-разному обрабатывают конец месяца и февраль, приложение не должно переводить одиночную дату в JDN или из JDN по этому ключу. Самый безопасный публичный формат — справочная карточка или, позже, калькулятор диапазона дат с явным выбором профиля.","short_description_eng":"A family of accounting/financial day-count conventions, not a standalone calendar. It cannot safely convert single dates to JDN.","short_description_rus":"Семейство бухгалтерских и финансовых расчётных конвенций, а не самостоятельный календарь. Одиночные даты нельзя безопасно переводить в JDN.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/accounting_360_day_calendar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only 360-Day Accounting Convention entry. 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Точные даты событий допустимы только по именованной таблице источника или местной авторитетной традиции, например по публикациям Manhyia Palace или Ghana Tourism.","short_description_eng":"Framework-only Akan/Asante cycle surface for the seven-day week, six-day cycle, and 42-day adaduanan; not a universal native date converter.","short_description_rus":"Описательная аканско-асантийская система циклов: семидневная неделя, шестидневный цикл и 42-дневный adaduanan; не универсальный конвертер дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/akan.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Framework-first Akan ritual/agricultural cycle surface centered on Nnanson, the seven-day week, and Adaduanan 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Historical Armenian sources also used other reckonings, including Anania’s shifted system and the Sarkawag or Small Count reform, so manuscript dates may require a source-specific profile.","longer_explanation_rus":"Здесь показан традиционный подвижный армянский календарь армянской эры: год состоит из 365 дней, двенадцати месяцев по 30 дней и пяти дополнительных дней. Эпоха календаря — 1 Навасарда 1 года, что соответствует 11 июля 552 года по юлианскому календарю. Поскольку високосных лет в этой модели нет, начало года постепенно смещается относительно юлианских и григорианских сезонов. В исторических источниках встречаются и другие армянские системы счёта, включая сдвинутую систему Анании и реформу Саркавага, поэтому даты рукописей могут требовать отдельного профиля источника.","short_description_eng":"A traditional 365-day Armenian Era calendar with 12 thirty-day months and five epagomenal days, counted from 11 July 552 Julian.","short_description_rus":"Традиционный 365-дневный армянский календарь: 12 месяцев по 30 дней и пять дополнительных дней, с эпохой 11 июля 552 года по юлианскому календарю.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/armenian.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Traditional moveable Armenian Era calendar with explicit epoch, 365-day drift, and named five-day epagomenal period.","has_closed_range":false,"native_range":{"start_jdn":1922867.5,"end_jdn":null,"start_standard":"0552-07-13 CE","end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":1922867.5,"boundary_standard":"0552-07-13 CE","policy":"discouraged"},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"armenian_era","display_name":"Armenian Era","display_name_key":"calendar_display_name_armenian_era","alias_keys":[],"aliases":[],"system_kind":"era","timezone_policy":"invariant","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":false,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"armenian_era_synthetic_gregorian_projection_july13_epoch_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_armenian_era","approximation_class":"synthetic_gregorian_era_projection_with_historical_epoch","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":"gregorian","base_calendar":"gregorian","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":1922867.5,"native_end_jdn":null,"native_scope_note":"Armenian Era overlay retained as a synthetic Gregorian month/day projection. 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Источниковая Великая армянская эра начинается 11 июля 552 года по юлианскому календарю, то есть 13 июля 552 года по пролептическому григорианскому календарю; собственный армянский календарь имеет двенадцать месяцев по 30 дней и пять дополнительных дней. Для исторических армянских дат следует использовать отдельную поверхность собственно армянского календаря.","short_description_eng":"Gregorian date with an Armenian Era year label; source epoch is Julian 552-07-11, not Gregorian 552-07-11.","short_description_rus":"Григорианская дата с номером года Армянской эры; источниковая эпоха — 11.07.552 по юлианскому календарю, а не 11.07.552 по григорианскому.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/armenian_era.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Synthetic Gregorian projection with Armenian Era year numbering and a corrected source epoch.","has_closed_range":false,"native_range":{"start_jdn":1922867.5,"end_jdn":null,"start_standard":"0552-07-13 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A simple fixed Bengali-family calculation with Assamese month names is only an approximation and should not be used for legal, archival, or festival-grade dates.","short_description":"Assamese Calendar (Bhaskarabda): a public Assamese date system used in Assam; exact conversion requires an Assam Government calendar table or a selected Assamese panjika profile.","longer_explanation_eng":"The Assamese Calendar, usually labeled Bhaskarabda in official Assam Government calendars, is an Assamese solar/panjika calendar used in Assam. Since a 2021 Assam Government notification, Assamese calendar dates are to be shown in government communications alongside Gregorian dates; separate local calendar directions apply for Barak Valley and Bodoland Territorial Region. Exact conversion should use either an official Assam Government annual calendar table or a specified Assamese panjika profile. A simple fixed Bengali-family calculation with Assamese month names is only an approximation and should not be used for legal, archival, or festival-grade dates.","longer_explanation_rus":"Ассамский календарь, в официальных календарях правительства Ассама обычно обозначаемый как Бхаскарабда, — ассамская солнечная календарная система и панджика, употребляемая в Ассаме. С уведомления правительства Ассама от 28 октября 2021 года ассамскую календарную дату следует указывать в государственных сообщениях вместе с григорианской датой; для долины Барак и региона Бодоланд предусмотрены отдельные местные календарные указания. Точный пересчёт должен опираться на официальный ежегодный календарь правительства Ассама или на явно выбранный профиль ассамской панджики. Простая фиксированная модель на основе бенгальского календаря с ассамскими названиями месяцев является только приближением и не подходит для юридически значимых, архивных или праздничных дат.","short_description_eng":"Assamese Calendar (Bhaskarabda): a public Assamese date system used in Assam; exact conversion requires an Assam Government calendar table or a selected Assamese panjika profile.","short_description_rus":"Ассамский календарь (Бхаскарабда): календарная система Ассама; точный пересчёт требует официального календаря правительства Ассама или выбранного профиля ассамской панджики.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/assamese.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Assamese/Bhaskarabda public surface currently limited to an explicit approximation; exact native conversion is table/profile-gated.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"assyrian","display_name":"Assyrian Calendar","display_name_key":"calendar_display_name_assyrian","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"sensitive","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":true,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"single_date","profile_family":"assyrian_modern_calendar","default_profile":"gregorian_month_indexed","available_profiles":["gregorian_month_indexed"],"profile_labels":{"gregorian_month_indexed":"Gregorian-month-indexed modern profile"},"profile_notes":{"gregorian_month_indexed":"Current implementation: 1=January, 4=April/Nisan. A future Nisan-ordinal profile must be explicit."},"projection_basis":"jdn","algorithm_id":"assyrian_modern_gregorian_month_indexed_v1","correlation_id":null,"source_authority":"research_corpus_2026_06_assyrian","approximation_class":"modern_fixed_cultural_calendar","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":2435198.5,"native_end_jdn":null,"native_scope_note":"Modern fixed Assyrian cultural calendar profile. The public numeric month contract is Gregorian-month-indexed (1=January, 4=April/Nisan), with the year beginning on April 1. Dates before 1955-04-01 are proleptic; this is not an ancient Assyrian lunisolar reconstruction.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Modern fixed Assyrian calendar: Gregorian-aligned civil month/day structure, Assyrian/Syriac month names, and an April 1 year boundary.","end_user_description":"This converter uses the modern fixed Assyrian calendar: a contemporary Assyrian cultural calendar whose New Year is Kha b-Nisan/Akitu on April 1. In the current profile, the civil month and day match the Gregorian calendar, but Assyrian/Syriac month names and an Assyrian year number are displayed. From April through December, AY = Gregorian year + 4750; from January through March, AY = Gregorian year + 4749. This is not a reconstruction of the ancient Assyrian lunar or lunisolar calendar, and dates before the modern twentieth-century adoption should be treated as proleptic. ([Atour][2])","short_description":"Modern Assyrian calendar: Gregorian-aligned civil dates with Assyrian/Syriac month names and an Assyrian year beginning on April 1.","longer_explanation_eng":"This converter uses the modern fixed Assyrian calendar: a contemporary Assyrian cultural calendar whose New Year is Kha b-Nisan/Akitu on April 1. In the current profile, the civil month and day match the Gregorian calendar, but Assyrian/Syriac month names and an Assyrian year number are displayed. From April through December, AY = Gregorian year + 4750; from January through March, AY = Gregorian year + 4749. This is not a reconstruction of the ancient Assyrian lunar or lunisolar calendar, and dates before the modern twentieth-century adoption should be treated as proleptic. ([Atour][2])","longer_explanation_rus":"Этот конвертер использует современный фиксированный ассирийский календарь: культурный календарь ассирийских общин, в котором Новый год, Ха б-Нисан/Акиту, приходится на 1 апреля. В текущем профиле число и месяц совпадают с григорианской гражданской датой, но отображаются ассирийско-сирийские названия месяцев и ассирийский номер года. С апреля по декабрь AY = григорианский год + 4750; с января по март AY = григорианский год + 4749. Это не реконструкция древнего ассирийского лунного или лунно-солнечного календаря, поэтому даты до современного введения в XX веке следует помечать как пролептические. ([Atour][2])","short_description_eng":"Modern Assyrian calendar: Gregorian-aligned civil dates with Assyrian/Syriac month names and an Assyrian year beginning on April 1.","short_description_rus":"Современный ассирийский календарь: даты совпадают с григорианскими, используются ассирийско-сирийские названия месяцев, а год начинается 1 апреля.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/assyrian.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Modern fixed Assyrian calendar: Gregorian-aligned civil month/day structure, Assyrian/Syriac month names, and an April 1 year boundary.","has_closed_range":false,"native_range":{"start_jdn":2435198.5,"end_jdn":null,"start_standard":"1955-04-01 CE","end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":2435198.5,"boundary_standard":"1955-04-01 CE","policy":"discouraged"},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"astrological_overlays","display_name":"Astrological Overlays","display_name_key":"calendar_display_name_astrological_overlays","alias_keys":[],"aliases":[],"system_kind":"overlay","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"overlay","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"research_corpus_2026_06_astrological_overlays","approximation_class":"reference_only_astrological_profile_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":true,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":"astronomical","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Astrological Overlays is exposed as a reference-only surface from `research_corpus_2026_06_astrological_overlays`. The research does not support arbitrary date conversion without a source profile, locality, event record, or edition-specific table.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference-only Astrological Overlays entry. Public conversion is intentionally disabled until the required profile/source infrastructure exists.","end_user_description":"Astrological overlays are optional cultural/reference labels placed on top of an existing date or instant. They are not a calendar converter. Results depend on the selected tradition and data source, such as tropical zodiac, a named sidereal ayanamsha, a panchanga source, a house system, or an astronomical constellation overlay. The app should show these only when a profile and required time/location data are available, and should not present a label as a unique date or as a prediction.","short_description":"Optional astrological labels for a selected instant; profile and sometimes location required.","longer_explanation_eng":"Astrological overlays are optional cultural/reference labels placed on top of an existing date or instant. They are not a calendar converter. Results depend on the selected tradition and data source, such as tropical zodiac, a named sidereal ayanamsha, a panchanga source, a house system, or an astronomical constellation overlay. The app should show these only when a profile and required time/location data are available, and should not present a label as a unique date or as a prediction.","longer_explanation_rus":"Астрологические наложения — это дополнительные культурные или справочные метки поверх уже заданной даты или момента времени. Это не самостоятельный календарный конвертер. Результат зависит от выбранной традиции и источника данных: например, тропического зодиака, конкретной сидерической айанамши, источника панчанги, системы домов или астрономических границ созвездий. Приложение должно показывать такие метки только при выбранном профиле и необходимых данных о времени и месте, не выдавая метку за уникальную дату или предсказание.","short_description_eng":"Optional astrological labels for a selected instant; profile and sometimes location required.","short_description_rus":"Дополнительные астрологические метки для выбранного момента; требуется профиль, иногда место наблюдения.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/astrological_overlays.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only Astrological Overlays entry. Public conversion is intentionally disabled until the required profile/source infrastructure 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Numbering","display_name_key":"cal_dn_astronomical","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"sensitive","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"astronomical_year_numbering","correlation_id":null,"source_authority":"internal_converter","approximation_class":null,"boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":null,"proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Astronomical Year Numbering is exposed as a calendar in the calendar family, with its input shape, output fields, scope notes, and date-view links shown on the reference page.","end_user_description":"This converter surface should be described as a computational Julian/Gregorian date profile using astronomical year numbering. The year-numbering convention is useful for arithmetic across the BCE/CE boundary because it removes the missing historical year zero. In the default profile, dates through 1582-10-04 use Julian calendar rules and dates from 1582-10-15 use Gregorian rules; the intervening ten labels are rejected because they were skipped in the papal reform profile. This is not a universal legal history of every country’s calendar adoption.","short_description":"Astronomical year numbering writes years as signed integers and includes year 0: year 0 is 1 BCE, year -1 is 2 BCE, and positive years match CE years.","longer_explanation_eng":"This converter surface should be described as a computational Julian/Gregorian date profile using astronomical year numbering. The year-numbering convention is useful for arithmetic across the BCE/CE boundary because it removes the missing historical year zero. In the default profile, dates through 1582-10-04 use Julian calendar rules and dates from 1582-10-15 use Gregorian rules; the intervening ten labels are rejected because they were skipped in the papal reform profile. This is not a universal legal history of every country’s calendar adoption.","longer_explanation_rus":"Этот раздел лучше описывать как вычислительный профиль юлианско-григорианских дат с астрономической нумерацией лет. Такая нумерация удобна для расчётов через границу до н. э./н. э., потому что устраняет отсутствующий в исторической системе «нулевой год». В профиле по умолчанию даты до 4 октября 1582 года включительно считаются по юлианским правилам, а с 15 октября 1582 года — по григорианским; даты 5–14 октября 1582 года отклоняются как пропущенные в папском профиле реформы. Это не универсальная юридическая история перехода всех стран на григорианский календарь.","short_description_eng":"Astronomical year numbering writes years as signed integers and includes year 0: year 0 is 1 BCE, year -1 is 2 BCE, and positive years match CE years.","short_description_rus":"Астрономическая нумерация лет записывает годы как целые числа со знаком и включает год 0: год 0 соответствует 1 году до н. э., год -1 — 2 году до н. э., а положительные годы совпадают с годами н. э.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/astronomical.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":null,"has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"allowed","input_spec":null,"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"astronomical_event_overlay","display_name":"Astronomical Event Overlay","display_name_key":"calendar_display_name_astronomical_event_overlay","alias_keys":[],"aliases":[],"system_kind":"overlay","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"overlay","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"research_corpus_2026_06_astronomical_event_overlay","approximation_class":"reference_only_event_catalog_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":"astronomical","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Astronomical Event Overlay is exposed as a reference-only surface from `research_corpus_2026_06_astronomical_event_overlay`. 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Пока этих данных нет, безопасный результат — поясняющая справка, а не нативная дата.","short_description_eng":"Reference-only crescent-visibility lunar framework; no arbitrary date conversion.","short_description_rus":"Справочный лунный профиль видимости серпа; произвольное преобразование дат не поддерживается.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/astronomical_lunar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only crescent-visibility lunar framework; no arbitrary month/day conversion until the astronomy visibility layer 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Calendar","display_name_key":"calendar_display_name_bahai","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"canonical","day_boundary":"sunset","canonical_timezone":"Asia/Tehran","formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":true,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"bahai_tehran_equinox_official_schema_v2","correlation_id":null,"source_authority":"convertdate_tehran_equinox_plus_research_corpus_2026_06_bahai","approximation_class":"tehran_equinox_with_civil_sunset_approximation","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":2394646.5,"native_end_jdn":null,"native_scope_note":"Baháʼí/Badí‘ calendar from the Baháʼí epoch, with modern Naw-Rúz determined by the Tehran equinox rule. The converter exposes an official-facing schema: month 0 is Ayyám-i-Há and month 19 is ‘Alá. Exact local instant boundaries remain sunset-approximate unless locality-grade sunset is supplied.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Baháʼí/Badí‘ calendar from the Baháʼí epoch, with modern Naw-Rúz determined by the Tehran equinox rule. The converter exposes an official-facing schema: month 0 is Ayyám-i-Há and month 19 is ‘Alá. Exact local instant boundaries remain sunset-approximate unless locality-grade sunset is supplied.","end_user_description":"The Baháʼí, or Badí‘, calendar is a solar religious calendar used by the Baháʼí community. It has 19 months of 19 days, followed near the end of the year by the intercalary period Ayyám-i-Há before the final month, ‘Alá. Since the common worldwide implementation that began at sunset on 20 March 2015, Naw-Rúz is determined from the vernal equinox calculated for Ṭihrán, and Baháʼí days run from sunset to sunset. For years 172–221 B.E. the strongest date correlations are the published Baháʼí World Centre table; outside that table, converter results should be treated as astronomical projections unless a later official table is loaded. ([Universal House of Justice][1])","short_description":"Solar Baháʼí/Badí‘ calendar: 19 months of 19 days plus Ayyám-i-Há; modern Naw-Rúz is fixed by the vernal equinox calculated for Ṭihrán, and days run sunset to sunset.","longer_explanation_eng":"The Baháʼí, or Badí‘, calendar is a solar religious calendar used by the Baháʼí community. It has 19 months of 19 days, followed near the end of the year by the intercalary period Ayyám-i-Há before the final month, ‘Alá. Since the common worldwide implementation that began at sunset on 20 March 2015, Naw-Rúz is determined from the vernal equinox calculated for Ṭihrán, and Baháʼí days run from sunset to sunset. For years 172–221 B.E. the strongest date correlations are the published Baháʼí World Centre table; outside that table, converter results should be treated as astronomical projections unless a later official table is loaded. ([Universal House of Justice][1])","longer_explanation_rus":"Календарь Бахаи, или календарь Бади, — солнечный религиозный календарь общины бахаи. В нём 19 месяцев по 19 дней, а перед последним месяцем ‘Ала’ располагаются вставные дни Айям-и-Ха. С общей всемирной реализации, начавшейся на закате 20 марта 2015 года, Нау-Руз определяется по весеннему равноденствию, рассчитанному для Тегерана, а день бахаи длится от заката до заката. Для 172–221 годов эры бахаи наиболее надёжна опубликованная таблица Всемирного центра бахаи; за её пределами результаты следует считать астрономической проекцией, пока не загружена более новая официальная таблица. ([Universal House of Justice][1])","short_description_eng":"Solar Baháʼí/Badí‘ calendar: 19 months of 19 days plus Ayyám-i-Há; modern Naw-Rúz is fixed by the vernal equinox calculated for Ṭihrán, and days run sunset to sunset.","short_description_rus":"Солнечный календарь Бахаи/Бади: 19 месяцев по 19 дней и Айям-и-Ха; современный Нау-Руз определяется по равноденствию для Тегерана, а день длится от заката до заката.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/bahai.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Baháʼí/Badí‘ calendar from the Baháʼí epoch, with modern Naw-Rúz determined by the Tehran equinox rule. The converter exposes an official-facing schema: month 0 is Ayyám-i-Há and month 19 is ‘Alá. Exact local instant boundaries remain sunset-approximate unless locality-grade sunset is supplied.","has_closed_range":false,"native_range":{"start_jdn":2394646.5,"end_jdn":null,"start_standard":"1844-03-21 CE","end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":2394646.5,"boundary_standard":"1844-03-21 CE","policy":"discouraged"},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"balinese_pawukon","display_name":"Balinese Pawukon Calendar","display_name_key":"calendar_display_name_balinese_pawukon","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"invariant","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":true,"output_mode":"multi_component","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"pawukon_cycle_anchor_2023_12_17_alias","correlation_id":null,"source_authority":"pinned_arithmetic_cycle","approximation_class":"pinned_cycle_anchor","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":"pawukon","base_calendar":"pawukon","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Balinese Pawukon is exposed as a first-class public alias of the implemented Pawukon 210-day cycle. It delegates to the existing pinned arithmetic Pawukon projection and does not add separate native parsing.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Balinese Pawukon public surface over the implemented 210-day Pawukon cycle.","end_user_description":"Pawukon is best treated as a cyclical naming layer, not as a standalone civil calendar. Each day can carry several concurrent labels from wewaran cycles, and each 210-day cycle contains 30 named seven-day wuku. Because the cycles are not numbered, the same labels recur every 210 days. A converter can safely show Pawukon information only when it is attached to a known Gregorian/Julian date or to a named, source-backed projection profile.","short_description":"The Balinese Pawukon is a 210-day cycle of named weeks and day cycles used in Balinese ritual and daily calendrical practice. It repeats, so a Pawukon label alone is not a unique date.","longer_explanation_eng":"Pawukon is best treated as a cyclical naming layer, not as a standalone civil calendar. Each day can carry several concurrent labels from wewaran cycles, and each 210-day cycle contains 30 named seven-day wuku. Because the cycles are not numbered, the same labels recur every 210 days. A converter can safely show Pawukon information only when it is attached to a known Gregorian/Julian date or to a named, source-backed projection profile.","longer_explanation_rus":"Павукон лучше показывать как циклический слой названий, а не как самостоятельный гражданский календарь. Один день может иметь несколько одновременных названий из циклов веваран, а полный цикл состоит из 30 семидневных вуку. Циклы не нумеруются, поэтому те же названия повторяются каждые 210 дней. Без даты григорианского/юлианского календаря или явно выбранного источникового профиля такое название не определяет единственный день.","short_description_eng":"The Balinese Pawukon is a 210-day cycle of named weeks and day cycles used in Balinese ritual and daily calendrical practice. It repeats, so a Pawukon label alone is not a unique date.","short_description_rus":"Балийский павукон — это повторяющийся 210-дневный цикл названий вуку и дневных циклов, используемый в балийской календарной практике. Само по себе название дня павукона не задаёт уникальную дату.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/balinese_pawukon.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Balinese Pawukon public surface over the implemented 210-day Pawukon cycle.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"allowed","input_spec":null,"representation_schema":"cycle_projection","output_schema":{"component_fields":["cycle_day","wuku_index","weekday_in_wuku","pancawara_index","triwara_index","sadwara_index"],"label_fields":["wuku_name","saptawara_name","pancawara_name","triwara_name","sadwara_name","tumpek_name","observance_summary","source_status"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"cycle_day":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_cycle_day"},"wuku_index":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_wuku_index"},"weekday_in_wuku":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_weekday_in_wuku"},"pancawara_index":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_pancawara_index"},"triwara_index":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_triwara_index"},"sadwara_index":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_sadwara_index"}},"label_specs":{"wuku_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_wuku_name"},"saptawara_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_saptawara_name"},"pancawara_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_pancawara_name"},"triwara_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_triwara_name"},"sadwara_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_sadwara_name"},"tumpek_name":{"semantic_type":"ritual_component","required":true,"repeatable":false,"human_label_key":"field_tumpek_name"},"observance_summary":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_observance_summary"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"}}},"format_templates":{"plain_date":"Wuku {wuku_name}","fancy_date":"{wuku_name} / {saptawara_name} / {pancawara_name}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":null},{"key":"balinese_saka","display_name":"Balinese Saka Calendar","display_name_key":"calendar_display_name_balinese_saka","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"canonical","day_boundary":"midnight","canonical_timezone":"Asia/Makassar","formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":false,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":true,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"balinese_saka_astronomy_surface_v1","correlation_id":null,"source_authority":"internal_astronomy_surface","approximation_class":"astronomy_derived_cultural_surface","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Astronomy-derived Balinese Saka public surface using the app's internal mean-new-moon primitives anchored near the Nyepi season. This is intentionally marked as an approximation layer: it gives the project a real Balinese Saka entry now, but not yet a provider-backed wariga/observance-grade implementation.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Approximate Balinese Saka public surface built from internal astronomy primitives. Honest current scope: real comparative year/month/day output now, fuller observance-grade Balinese calendar logic later.","end_user_description":"The Balinese Saka calendar is the Balinese lunisolar sasih calendar used with Balinese Hindu religious life and alongside the separate Pawukon cycle. In source-backed practice, the Saka year turns at Nyepi, the Day of Silence, at the beginning of Sasih Kadasa after Tilem Kasanga. The current converter surface is only an astronomy-derived approximation based on internal lunar calculations, so it should not be used to decide ceremonies, official restrictions, travel plans, or temple dates. A stronger implementation needs a named Balinese calendar source profile or provider table.","short_description":"Approximate Balinese Saka calendar display; not yet a source-table or ceremony-grade Balinese calendar.","longer_explanation_eng":"The Balinese Saka calendar is the Balinese lunisolar sasih calendar used with Balinese Hindu religious life and alongside the separate Pawukon cycle. In source-backed practice, the Saka year turns at Nyepi, the Day of Silence, at the beginning of Sasih Kadasa after Tilem Kasanga. The current converter surface is only an astronomy-derived approximation based on internal lunar calculations, so it should not be used to decide ceremonies, official restrictions, travel plans, or temple dates. A stronger implementation needs a named Balinese calendar source profile or provider table.","longer_explanation_rus":"Балийский календарь сака — это балийский лунно-солнечный календарь сасих, используемый в религиозной жизни балийских индуистов наряду с отдельным циклом павукон. В источниковой традиции год сака меняется на Ньепи, День тишины, в начале сасиха Кадаса после Тилем Касанга. Текущая поверхность конвертера является только астрономически выведенным приближением на основе внутренних лунных расчётов, поэтому её нельзя использовать для определения обрядовых дат, официальных ограничений, поездок или храмовых церемоний. Для полноценной реализации нужен именованный профиль балийского календаря или таблица авторитетного источника.","short_description_eng":"Approximate Balinese Saka calendar display; not yet a source-table or ceremony-grade Balinese calendar.","short_description_rus":"Приблизительное отображение балийского календаря сака; пока не источниковая и не обрядовая версия календаря.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/balinese_saka.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Approximate Balinese Saka public surface built from internal astronomy primitives. Honest current scope: real comparative year/month/day output now, fuller observance-grade Balinese calendar logic later.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":null,"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second","is_leap_month"],"label_fields":["month_name","month_name_format","era","era_format","source_status"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"},"is_leap_month":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_is_leap_month"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"}}},"format_templates":{"plain_date":"{day} {month_name_display}, {year} {era_format}","fancy_date":"{day} {month_name_display}, {year} {era_format}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"baltic_nine_day_week","display_name":"Baltic Nine-Day Week","display_name_key":"calendar_display_name_baltic_nine_day_week","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"cycle","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"future_baltic_nine_day_week","approximation_class":"reference_only_reconstructed_week_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"A live cycle position needs a secure anchor and source profile, so arbitrary-date conversion is disabled.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"The Baltic Nine-Day Week preserves reconstructed or folkloric non-seven-day cycle material as a historical cycle tradition.","end_user_description":"The Baltic Nine-Day Week is a reference label for reconstructed or source-claimed Baltic non-seven-day time-reckoning traditions. Lithuanian material is mainly associated with the debated Gediminas Sceptre calendar tradition; Latvian material is associated with folkloric Dainas-based reconstruction of a solar year containing a nine-day 'savaite'. These sources are historically interesting, but they do not provide a secure epoch, continuous cycle, native date table, or JDN correlation. The converter should therefore describe the tradition only and should not convert arbitrary dates.","short_description":"A debated Baltic folkloric/reconstructed non-seven-day week tradition; reference-only, not safe for date conversion.","longer_explanation_eng":"The Baltic Nine-Day Week is a reference label for reconstructed or source-claimed Baltic non-seven-day time-reckoning traditions. Lithuanian material is mainly associated with the debated Gediminas Sceptre calendar tradition; Latvian material is associated with folkloric Dainas-based reconstruction of a solar year containing a nine-day 'savaite'. These sources are historically interesting, but they do not provide a secure epoch, continuous cycle, native date table, or JDN correlation. The converter should therefore describe the tradition only and should not convert arbitrary dates.","longer_explanation_rus":"Балтийская девятидневная неделя — это справочная метка для реконструируемых или спорных балтийских традиций счёта времени с неделей не из семи дней. Литовский материал связан прежде всего с дискуссионным календарём «Скипетр Гедимина», а латвийский материал — с реконструкциями по дайнам, где встречается девятидневный период savaite. Эти сведения важны для истории календарей и фольклора, но они не дают надёжной эпохи, непрерывной последовательности дней, таблицы собственных дат или привязки к JDN. Поэтому в конвертере безопасна только справочная карточка, а не пересчёт произвольных дат.","short_description_eng":"A debated Baltic folkloric/reconstructed non-seven-day week tradition; reference-only, not safe for date conversion.","short_description_rus":"Спорная балтийская фольклорно-реконструируемая традиция недели не из семи дней; только справочно, без пересчёта дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/baltic_nine_day_week.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only Baltic Nine-Day Week entry. 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Он фиксированно согласован с государственными датами Бангладеш: 21 февраля соответствует 8 Фалгуна, 26 марта — 12 Чойтро, 14 апреля — 1 Бойшакха, 16 декабря — 1 Поуша. Как нативный этот алгоритм следует применять с 1426 года БС / 2019 года; более ранние официальные версии Бангладеш и индийские бенгальские календари могут давать другие даты. ([Department of Printing and Publications][5]) ([Department of Printing and Publications][8])","short_description_eng":"The Bangladeshi National Calendar is the fixed civil Bangla calendar used in Bangladesh after the 2019 reform: New Year is April 14, the first six months have 31 days, and Falgun has 29 days or 30 in Gregorian leap years.","short_description_rus":"Бангладешский национальный календарь — фиксированный гражданский вариант бенгальского календаря, применяемый в Бангладеш после реформы 2019 года: Новый год приходится на 14 апреля, первые шесть месяцев имеют по 31 дню, а Фалгун имеет 29 дней или 30 дней в григорианский високосный год.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/bangladeshi_national.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Fixed official Bangladeshi national calendar using the post-2019 state rule set. 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TDB определяется как масштабированное линейное преобразование TCB и в среднем остаётся близким к земному времени TT. Поскольку текущая метка смешивает оба названия, конвертер не может однозначно понять, какую шкалу имел в виду пользователь. Нужно выбирать отдельную запись TCB или TDB; преобразование этой метки в JDN или из JDN следует блокировать.","short_description_eng":"Ambiguous placeholder combining TCB and TDB; not a standalone converter.","short_description_rus":"Неоднозначная метка, смешивающая TCB и TDB; не отдельный конвертер.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/barycentric_coordinate_dynamical_time.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only Barycentric Coordinate/Dynamical Time entry. 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exists.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"unsupported","input_spec":null,"representation_schema":"observational_projection","output_schema":{"component_fields":[],"label_fields":["framework_summary","observation_basis","evidence_type","correlation_status","scholarly_status","recommended_use","seasonal_anchor","month_start_rule","intercalation_basis","observation_cycle","star_phase_basis","locality_basis","seasonality_basis","visibility_basis","event_basis","profile_scope_note","source_status","warning","supported_input","profile_requirement","unsafe_formula_warning","available_disabled_profiles"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{},"label_specs":{"framework_summary":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_framework_summary"},"observation_basis":{"semantic_type":"astronomical_marker","required":true,"repeatable":false,"human_label_key":"field_observation_basis"},"evidence_type":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_evidence_type"},"correlation_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_correlation_status"},"scholarly_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_scholarly_status"},"recommended_use":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_recommended_use"},"seasonal_anchor":{"semantic_type":"season","required":true,"repeatable":false,"human_label_key":"field_seasonal_anchor"},"month_start_rule":{"semantic_type":"astronomical_marker","required":true,"repeatable":false,"human_label_key":"field_month_start_rule"},"intercalation_basis":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_intercalation_basis"},"observation_cycle":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_observation_cycle"},"star_phase_basis":{"semantic_type":"astronomical_marker","required":true,"repeatable":false,"human_label_key":"field_star_phase_basis"},"locality_basis":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_locality_basis"},"seasonality_basis":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_seasonality_basis"},"visibility_basis":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_visibility_basis"},"event_basis":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_event_basis"},"profile_scope_note":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_profile_scope_note"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"},"warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_warning"},"supported_input":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_supported_input"},"profile_requirement":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_profile_requirement"},"unsafe_formula_warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_unsafe_formula_warning"},"available_disabled_profiles":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_available_disabled_profiles"}}},"format_templates":{"plain_date":"{framework_summary}","fancy_date":"{framework_summary}","native_date":"{framework_summary}","time":""},"format_locale_variants":null},{"key":"bengali","display_name":"Bengali 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(not loaded)"},"profile_notes":{"bangladesh_legacy_fixed_civil_pre2019":"Legacy fixed civil approximation: first five months have 31 days, later months mostly 30, with a Falgun leap adjustment.","bangladesh_official_2019":"Delegates to the post-2019 Bangladeshi national fixed civil rule.","west_bengal_panjika_source_table":"Requires a named Panjika/source-table profile before exact 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The default is a legacy fixed-civil approximation; current Bangladesh official dates should use profile bangladesh_official_2019 or the separate bangladeshi_national key. Indian/West Bengal Panjika conversion is not implemented without a source table.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Profile-dependent Bengali/Bangla calendar family. Bangladesh official, legacy fixed-civil, and Panjika/source-table contexts must not be merged.","end_user_description":"The Bengali Calendar is a real living calendar tradition, but it is not one universal arithmetic converter. Bangladesh uses an official fixed civil Bangla calendar, revised in 2019, where the first six months have 31 days and Falgun has 29 days, or 30 in leap years. West Bengal and other Indian Bengali contexts often use panjika or regional civil-holiday practice, which can depend on source editions and astronomical rules. For this reason, the app must ask for a profile before converting. A generic Bengali date should not be marked native unless the selected profile and date range are source-backed.","short_description":"Profile-dependent Bengali/Bangla calendar family; Bangladesh fixed civil and Indian panjika profiles must not be merged.","longer_explanation_eng":"The Bengali Calendar is a real living calendar tradition, but it is not one universal arithmetic converter. Bangladesh uses an official fixed civil Bangla calendar, revised in 2019, where the first six months have 31 days and Falgun has 29 days, or 30 in leap years. West Bengal and other Indian Bengali contexts often use panjika or regional civil-holiday practice, which can depend on source editions and astronomical rules. For this reason, the app must ask for a profile before converting. A generic Bengali date should not be marked native unless the selected profile and date range are source-backed.","longer_explanation_rus":"Бенгальский календарь — реальная живая календарная традиция, но это не один универсальный арифметический конвертер. В Бангладеш используется официальный фиксированный гражданский календарь, пересмотренный в 2019 году: первые шесть месяцев имеют по 31 дню, а фалгун имеет 29 дней, либо 30 дней в високосный год. В Западной Бенгалии и других индийских бенгальских контекстах часто используется панджика или региональная гражданская практика, где важны источник, местность и астрономические правила. Поэтому приложению нужен выбор профиля перед конвертацией. Общая бенгальская дата не должна помечаться как нативная без подтверждённого профиля и диапазона.","short_description_eng":"Profile-dependent Bengali/Bangla calendar family; Bangladesh fixed civil and Indian panjika profiles must not be merged.","short_description_rus":"Профиль-зависимое семейство бенгальского календаря; фиксированный календарь Бангладеш и индийскую панджику нельзя смешивать.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/bengali.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Profile-dependent Bengali/Bangla calendar family. Bangladesh official, legacy fixed-civil, and Panjika/source-table contexts must not be merged.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"berber","display_name":"Amazigh Calendar","display_name_key":"calendar_display_name_berber","alias_keys":["calendar_alias_berber"],"aliases":["Berber Calendar"],"system_kind":"calendar","timezone_policy":"sensitive","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"single_date","profile_family":"amazigh_yennayer_public_anchor","default_profile":"fixed_jan14_public","available_profiles":["fixed_jan14_public","morocco_public_jan14","algeria_public_jan12","regional_yennayer_jan13"],"profile_labels":{"fixed_jan14_public":"Fixed January 14 public surface","morocco_public_jan14":"Morocco public January 14","algeria_public_jan12":"Algeria public January 12","regional_yennayer_jan13":"Regional January 13"},"profile_notes":{"fixed_jan14_public":"Default +950 Amazigh-era surface with Yennayer on January 14.","morocco_public_jan14":"Morocco's official Amazigh New Year public-holiday convention.","algeria_public_jan12":"Algeria's official Yennayer public-holiday convention.","regional_yennayer_jan13":"Use when a source or community states January 13."},"projection_basis":"jdn","algorithm_id":"amazigh_public_yennayer_profiled_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_berber","approximation_class":"profiled_modern_public_solar_surface","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Modern Amazigh/Berber public calendar profile family. Yennayer is profile-dependent: Algeria officially uses January 12, Morocco officially uses January 14, and regional sources can use January 13. The +950 AM era is modern cultural/public convention, not an ancient continuous native era.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Profiled modern Amazigh/Berber public solar surface with +950 AM year numbering and explicit Yennayer anchor profiles.","end_user_description":"This Amazigh/Berber calendar view uses a modern public convention: the year number is the Gregorian year plus 950, and the New Year is fixed to January 14. That matches one common public surface, especially Morocco’s official January 14 Amazigh New Year, but it is not the only Yennayer convention. Algeria officially marks Yennayer on January 12, and heritage sources record regional practice on January 12, 13, or 14. The +950 Amazigh-era year count is a modern cultural convention associated with Sheshonq/Chachnaq, so very old dates should be treated as proleptic or extended rather than historically native.","short_description":"A modern Amazigh/Berber public calendar surface with a fixed January 14 New Year and a +950 AM year number.","longer_explanation_eng":"This Amazigh/Berber calendar view uses a modern public convention: the year number is the Gregorian year plus 950, and the New Year is fixed to January 14. That matches one common public surface, especially Morocco’s official January 14 Amazigh New Year, but it is not the only Yennayer convention. Algeria officially marks Yennayer on January 12, and heritage sources record regional practice on January 12, 13, or 14. The +950 Amazigh-era year count is a modern cultural convention associated with Sheshonq/Chachnaq, so very old dates should be treated as proleptic or extended rather than historically native.","longer_explanation_rus":"Этот вид амазигского/берберского календаря использует современную публичную конвенцию: номер года равен григорианскому году плюс 950, а Новый год фиксирован на 14 января. Такая модель соответствует одной распространённой публичной поверхности, особенно официальному марокканскому празднику амазигского Нового года 14 января, но это не единственная традиция Йеннайера. В Алжире Йеннайер официально отмечается 12 января, а источники по наследию фиксируют региональные варианты 12, 13 и 14 января. Счёт лет +950 — современная культурная конвенция, связанная с Шешонком/Чачнаком, поэтому очень ранние даты следует считать пролептическими или расширенными, а не исторически нативными.","short_description_eng":"A modern Amazigh/Berber public calendar surface with a fixed January 14 New Year and a +950 AM year number.","short_description_rus":"Современная публичная амазигская/берберская календарная поверхность с Новым годом 14 января и номером года AM = григорианский год + 950.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/berber.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Profiled modern Amazigh/Berber public solar surface with +950 AM year numbering and explicit Yennayer anchor profiles.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"binary_clock","display_name":"Binary Clock","display_name_key":"cal_dn_binary_clock","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"canonical","day_boundary":"midnight","canonical_timezone":"UTC","formatter_style":"plain","calendar_family":"clock-notation","supports_projection":true,"supports_parsing":false,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"label_only","profile_family":"binary_clock_notation","default_profile":"utc_seconds_of_day_17bit","available_profiles":["utc_seconds_of_day_17bit"],"profile_labels":{"utc_seconds_of_day_17bit":"UTC seconds-of-day, 17-bit"},"profile_notes":{"utc_seconds_of_day_17bit":"Zero-padded 17-bit binary label for the nominal UTC whole second elapsed since midnight; leap-second label 23:59:60 is not represented."},"projection_basis":"jdn","algorithm_id":"binary_clock_utc_seconds_of_day_17bit_v2","correlation_id":null,"source_authority":"internal_notation","approximation_class":"synthetic_utc_seconds_of_day_clock_notation","boundary_policy":null,"overlay_scope":null,"service_resolution":"1 second","requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":"utc_seconds_of_day","cycle_length":"86400_seconds","cycle_anchor":"00:00:00 UTC on each UTC civil date","base_system":null,"base_calendar":null,"base_time_scale":"UTC","overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Synthetic UTC seconds-of-day notation. Public binary clocks use multiple incompatible display conventions; this profile is not a physical time scale and has no native historical range.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Synthetic 17-bit binary clock label for nominal UTC seconds since midnight.","end_user_description":"Binary Clock is a display notation, not a calendar and not a physical time scale. In this converter’s current profile, the time is shown as a 17-bit binary number equal to the whole seconds elapsed since 00:00:00 UTC on the current UTC day. For example, UTC midnight is 00000000000000000 and 23:59:59 is 10101000101111111. The label repeats every UTC day and does not identify a date by itself. Public binary clocks use several conventions, including BCD digit displays and hour/minute/second component displays, so this profile should be read specifically as “UTC seconds-of-day in binary,” not as every possible binary clock. Public device examples and patent evidence show binary clocks as display devices rather than official time scales. ([Google Patents][1])","short_description":"Synthetic UTC binary clock: a 17-bit binary label for whole seconds since UTC midnight.","longer_explanation_eng":"Binary Clock is a display notation, not a calendar and not a physical time scale. In this converter’s current profile, the time is shown as a 17-bit binary number equal to the whole seconds elapsed since 00:00:00 UTC on the current UTC day. For example, UTC midnight is 00000000000000000 and 23:59:59 is 10101000101111111. The label repeats every UTC day and does not identify a date by itself. Public binary clocks use several conventions, including BCD digit displays and hour/minute/second component displays, so this profile should be read specifically as “UTC seconds-of-day in binary,” not as every possible binary clock. Public device examples and patent evidence show binary clocks as display devices rather than official time scales. ([Google Patents][1])","longer_explanation_rus":"Двоичные часы в этом конвертере — это способ записи времени, а не календарь и не самостоятельная физическая шкала времени. В текущем профиле показывается 17-битное двоичное число: количество полных секунд, прошедших с 00:00:00 UTC текущих суток UTC. Например, полночь UTC отображается как 00000000000000000, а 23:59:59 — как 10101000101111111. Такая метка повторяется каждый день UTC и сама по себе не задаёт дату. В публичных двоичных часах встречаются разные схемы, включая BCD-запись отдельных цифр и отдельное двоичное отображение часов, минут и секунд, поэтому этот профиль следует понимать именно как «двоичные секунды суток UTC».","short_description_eng":"Synthetic UTC binary clock: a 17-bit binary label for whole seconds since UTC midnight.","short_description_rus":"Синтетические двоичные часы UTC: 17-битная метка полных секунд с полуночи UTC.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/binary_clock.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Synthetic 17-bit binary clock label for nominal UTC seconds since midnight.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"unsupported","input_spec":null,"representation_schema":"cycle_projection","output_schema":{"component_fields":["clock_label"],"label_fields":["source_status","warning"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"clock_label":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_clock_label"}},"label_specs":{"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"},"warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_warning"}}},"format_templates":{"plain_date":"{clock_label}","fancy_date":"{clock_label}","native_date":"{clock_label}","time":"{clock_label}"},"format_locale_variants":null},{"key":"bjd","display_name":"Barycentric Julian Date (TDB)","display_name_key":"cal_dn_bjd","alias_keys":[],"aliases":[],"system_kind":"serial","timezone_policy":"invariant","day_boundary":"noon","canonical_timezone":null,"formatter_style":"plain","calendar_family":"serial","supports_projection":true,"supports_parsing":true,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"scalar","profile_family":"bjd_tdb_precision_profile","default_profile":"jd_tdb_proxy","available_profiles":["jd_tdb_proxy"],"profile_labels":{"jd_tdb_proxy":"JD(TDB) proxy"},"profile_notes":{"jd_tdb_proxy":"Current implementation converts UTC JD to JD(TDB) only. 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Для корректного расчёта нужны момент наблюдения, координаты или эфемерида объекта, местоположение наблюдателя или эфемерида космического аппарата, шкала времени и выбранная эфемерида Солнечной системы. Текущий результат приложения является только прокси JD(TDB), то есть переводом юлианской даты в шкалу TDB; его нельзя показывать как полноценную BJD без геометрических входных данных. 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Вставка повторного месяца и корректировка названий дней зависят от наблюдений, поэтому точный пересчёт современной даты невозможен без местности, выбранного источника и записи наблюдений.","short_description_eng":"A Borana Oromo lunar-stellar observational framework; useful for contextual comparison, not for exact civil date conversion.","short_description_rus":"Лунно-звёздная наблюдательная система борана-оромо; подходит для контекстного описания, но не для точного гражданского пересчёта дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/borana.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Framework-first Borana lunar-stellar surface using named months, day names, and pastoral-season 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Использовать это как полноценный конвертер дат по дням нельзя без явно выбранной научной реконструкции.","short_description_eng":"Sparse Proto-Bulgar cyclic year/month labels; not a source-safe full date converter.","short_description_rus":"Праболгарские циклические метки года и месяца; не полноценный конвертер дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/bulgar_calendar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Cyclic Bulgar reconstruction surface with animal-year and month labels; exact leap/month rules remain disputed.","has_closed_range":true,"native_range":{"start_jdn":1969793.5,"end_jdn":2036998.5,"start_standard":"0681-01-04 CE","end_standard":"0865-01-04 CE"},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":1969793.5,"boundary_standard":"0681-01-04 CE","policy":"discouraged"},"post_native_projection":{"boundary_jdn":2036998.5,"boundary_standard":"0865-01-04 CE","policy":"discouraged"},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":null,"representation_schema":"compound_projection","output_schema":{"component_fields":["year","month","day","day_of_year","cycle_year_index"],"label_fields":["cycle_name","month_name","month_name_format","observance_summary","historical_note","source_status","warning"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"day_of_year":{"semantic_type":"ordinal","required":true,"repeatable":false,"human_label_key":"field_day_of_year"},"cycle_year_index":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_cycle_year_index"}},"label_specs":{"cycle_name":{"semantic_type":"cycle_name","required":true,"repeatable":false,"human_label_key":"field_cycle_name"},"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"observance_summary":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_observance_summary"},"historical_note":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_historical_note"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"},"warning":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_warning"}}},"format_templates":{"plain_date":"{observance_summary}","fancy_date":"{observance_summary}","native_date":"{observance_summary}","time":""},"format_locale_variants":null},{"key":"burmese","display_name":"Burmese Calendar","display_name_key":"calendar_display_name_burmese","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"canonical","day_boundary":"custom","canonical_timezone":"Asia/Yangon","formatter_style":"plain","calendar_family":"calendar","supports_projection":false,"supports_parsing":false,"supports_timezone":true,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":true,"supports_multiple_components":true,"output_mode":"multi_component","profile_family":"burmese_method","default_profile":null,"available_profiles":["yan_naing_aye_algorithm_me0_plus","modern_myanmar_official_table","historical_makaranta","historical_thandeikta","arakanese_rakhine"],"profile_labels":{"yan_naing_aye_algorithm_me0_plus":"Yan Naing Aye algorithmic profile","modern_myanmar_official_table":"Modern Myanmar official table","historical_makaranta":"Historical Makaranta","historical_thandeikta":"Historical Thandeikta","arakanese_rakhine":"Arakanese/Rakhine variant"},"profile_notes":{"yan_naing_aye_algorithm_me0_plus":"Pending full port; requires year type, First/Second Waso, month type, moon phase, and fortnight-day logic.","modern_myanmar_official_table":"Requires official Myanmar Calendar Advisory Board/table data before public conversion.","historical_makaranta":"Historical profile blocked pending source-checked rules.","historical_thandeikta":"Historical profile blocked pending source-checked rules.","arakanese_rakhine":"Related Rakhine practice is not the default Burmese profile and requires separate intercalation handling."},"projection_basis":"jdn","algorithm_id":"burmese_yan_naing_aye_pending_full_port","correlation_id":null,"source_authority":"research_corpus_2026_06_burmese","approximation_class":"blocked_pending_profile_algorithm","boundary_policy":"myanmar_standard_time_and_profile_specific_civil_day_required","overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Burmese/Myanmar calendar conversion is blocked in this build. The previous placeholder converter was removed because real output requires a profile-aware Yan Naing Aye/mmcal-style algorithm or official table source for Myanmar year type, First/Second Waso, month type, moon phase, and fortnight day.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference-gated Burmese/Myanmar lunisolar calendar surface; arbitrary JDN conversion is disabled until the full profile-aware algorithm or official tables are implemented.","end_user_description":"The Burmese or Myanmar calendar is a traditional lunisolar calendar using Myanmar Era years, lunar months, moon phases, and fortnight days. It is still important for Myanmar cultural, Buddhist, and public-holiday dates, but there is not one timeless formula that can be applied honestly to every date. Modern official dates may depend on the Myanmar Calendar Advisory Board, while historical and arithmetic calculations require a declared profile such as modern Myanmar, Makaranta, Thandeikta, or Arakanese/Rakhine. This converter should show official/table-backed results where available and label arithmetic future or historical projections as algorithmic.","short_description":"Traditional Myanmar lunisolar calendar; conversion is profile-dependent and must use Myanmar Standard Time.","longer_explanation_eng":"The Burmese or Myanmar calendar is a traditional lunisolar calendar using Myanmar Era years, lunar months, moon phases, and fortnight days. It is still important for Myanmar cultural, Buddhist, and public-holiday dates, but there is not one timeless formula that can be applied honestly to every date. Modern official dates may depend on the Myanmar Calendar Advisory Board, while historical and arithmetic calculations require a declared profile such as modern Myanmar, Makaranta, Thandeikta, or Arakanese/Rakhine. This converter should show official/table-backed results where available and label arithmetic future or historical projections as algorithmic.","longer_explanation_rus":"Бирманский, или мьянманский, календарь — традиционный лунно-солнечный календарь с годами мьянманской эры, лунными месяцами, фазами луны и днями половины месяца. Он по-прежнему важен для культурных, буддийских и государственных дат Мьянмы, но для него нельзя честно применять одну неизменную формулу ко всем эпохам. Современные официальные даты могут зависеть от Совета по мьянманскому календарю, а исторические и арифметические расчёты требуют выбранного профиля: современного мьянманского, Макаранта, Тандейкта или араканского/ракхайнского. В интерфейсе официальные табличные данные нужно отделять от алгоритмических прогнозов.","short_description_eng":"Traditional Myanmar lunisolar calendar; conversion is profile-dependent and must use Myanmar Standard Time.","short_description_rus":"Традиционный лунно-солнечный календарь Мьянмы; конвертация зависит от профиля и должна использовать мьянманское стандартное время.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/burmese.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-gated Burmese/Myanmar lunisolar calendar surface; arbitrary JDN conversion is disabled until the full profile-aware algorithm or official tables are implemented.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":null,"representation_schema":"compound_projection","output_schema":{"component_fields":[],"label_fields":["era"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{},"label_specs":{"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"}}},"format_templates":{"plain_date":"{year}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":null},{"key":"burmese_eight_day_week","display_name":"Burmese Eight-Day Week","display_name_key":"calendar_display_name_burmese_eight_day_week","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"canonical","day_boundary":"midnight","canonical_timezone":"Asia/Yangon","formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":false,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":false,"output_mode":"multi_component","profile_family":"burmese_weekday_split","default_profile":"modern_noon_split","available_profiles":["modern_noon_split","htin_aung_18h_split"],"profile_labels":{"modern_noon_split":"Modern noon split","htin_aung_18h_split":"Htin Aung 18:00 split"},"profile_notes":{"modern_noon_split":"Wednesday changes to Yahu/Rahu at noon in common modern public summaries.","htin_aung_18h_split":"Wednesday changes to Rahu/Yahu at 18:00 in Maung Htin Aung's account."},"projection_basis":"jdn","algorithm_id":"burmese_eight_day_week_profiled_weekday_split_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_burmese_eight_day_week","approximation_class":"profiled_weekday_split_cycle","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":"non_standard_week","cycle_length":"8_stations_over_7_civil_weekdays","cycle_anchor":"localized_gregorian_weekday_with_profiled_wednesday_split","base_system":"gregorian","base_calendar":"gregorian","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Burmese eight-day week surface projected from the localized civil weekday in the canonical Myanmar context, with Wednesday split into two stations. The noon-vs-18:00 boundary is profile-dependent; the cycle is not an independent native date converter.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Burmese eight-day planetary week overlay with profile-dependent Wednesday split.","end_user_description":"The Burmese eight-day week is a traditional astrological and devotional way of dividing the ordinary seven-day week into eight weekday stations. Wednesday is split into a normal Wednesday/Mercury station and a later Rahu or Yahu station. The stations are used in Myanmar astrology and in devotional practice at planetary posts, such as those around Shwedagon Pagoda. This is not a separate civil calendar with its own year, month, and day arithmetic. A converter can safely show the station for a localized civil date and time, but the Wednesday split boundary must be transparent because sources differ between a noon split and a 6 p.m. split.","short_description":"A Myanmar/Burmese planetary weekday overlay: seven civil weekdays are shown as eight stations because Wednesday is split into a Wednesday/Mercury station and a later Rahu/Yahu station.","longer_explanation_eng":"The Burmese eight-day week is a traditional astrological and devotional way of dividing the ordinary seven-day week into eight weekday stations. Wednesday is split into a normal Wednesday/Mercury station and a later Rahu or Yahu station. The stations are used in Myanmar astrology and in devotional practice at planetary posts, such as those around Shwedagon Pagoda. This is not a separate civil calendar with its own year, month, and day arithmetic. A converter can safely show the station for a localized civil date and time, but the Wednesday split boundary must be transparent because sources differ between a noon split and a 6 p.m. split.","longer_explanation_rus":"Бирманская восьмидневная неделя — это традиционный астрологический и культовый способ делить обычную семидневную неделю на восемь планетарных позиций. Среда делится на обычную среду, связанную с Меркурием, и более позднюю позицию Раху/Яху. Такие позиции используются в бирманской астрологии и в практике поклонения у планетарных постов, например вокруг пагоды Шведагон. Это не самостоятельный гражданский календарь с собственными правилами года, месяца и дня. Конвертер может безопасно показывать позицию для локальной гражданской даты и времени, но границу разделения среды нужно показывать явно: в разных источниках встречаются полуденный и 18:00-профиль.","short_description_eng":"A Myanmar/Burmese planetary weekday overlay: seven civil weekdays are shown as eight stations because Wednesday is split into a Wednesday/Mercury station and a later Rahu/Yahu station.","short_description_rus":"Бирманский планетарный слой дней недели: семь гражданских дней представлены как восемь позиций, потому что среда делится на позицию Меркурия и более позднюю позицию Раху/Яху.","research_explanation_source":"docs/research_output/calendar_research_outputs 2/burmese_eight_day_week.research.json","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Burmese eight-day planetary week overlay with profile-dependent Wednesday split.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":null,"representation_schema":"cycle_projection","output_schema":{"component_fields":["cycle_day","hour","minute","second"],"label_fields":["day_name","observance_summary","source_status"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"cycle_day":{"semantic_type":"cycle_index","required":true,"repeatable":false,"human_label_key":"field_cycle_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"day_name":{"semantic_type":"weekday","required":true,"repeatable":false,"human_label_key":"field_day_name"},"observance_summary":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_observance_summary"},"source_status":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_source_status"}}},"format_templates":{"plain_date":"{day_name}","fancy_date":"{observance_summary}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"byzantine","display_name":"Byzantine Calendar","display_name_key":"calendar_display_name_byzantine","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"sensitive","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"single_date","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"byzantine_am_julian_sep1_offset_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_byzantine","approximation_class":"julian_era_arithmetic","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Byzantine AM is implemented as the Constantinopolitan world-era year count over the Julian calendar with a September 1 year boundary. The 5509 BCE creation epoch is an era coordinate, not evidence of civil use from that date; historical use belongs to Byzantine and Orthodox old-style contexts, while proleptic projection is useful but should be labeled as extended.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Byzantine Anno Mundi year numbering over the Julian calendar with a September 1 year boundary; historical old-style context plus explicit proleptic caveat.","end_user_description":"The Byzantine Calendar, more precisely the Constantinopolitan Byzantine Creation Era, is an Anno Mundi calendar used in Byzantine and Orthodox contexts. It keeps the Julian month and day structure, but counts years from the calculated creation of the world and starts each year on September 1. For example, Julian September 1, 2016 / Gregorian September 14, 2016 began AM 7525. This converter uses the Constantinopolitan profile: September-December dates add 5509 to the Julian year, while January-August dates add 5508.","short_description":"Julian calendar structure with Byzantine Anno Mundi year numbering and a September 1 new year.","longer_explanation_eng":"The Byzantine Calendar, more precisely the Constantinopolitan Byzantine Creation Era, is an Anno Mundi calendar used in Byzantine and Orthodox contexts. It keeps the Julian month and day structure, but counts years from the calculated creation of the world and starts each year on September 1. For example, Julian September 1, 2016 / Gregorian September 14, 2016 began AM 7525. This converter uses the Constantinopolitan profile: September-December dates add 5509 to the Julian year, while January-August dates add 5508.","longer_explanation_rus":"Византийский календарь, точнее константинопольская эра от сотворения мира, — это система летоисчисления Anno Mundi, применявшаяся в византийской и православной традиции. Месяцы и дни соответствуют юлианскому календарю, но год считается от предполагаемого сотворения мира и начинается 1 сентября. Например, 1 сентября 2016 года по юлианскому календарю / 14 сентября 2016 года по григорианскому календарю начался 7525 год от сотворения мира. В этом профиле для дат с сентября по декабрь к юлианскому году прибавляется 5509, а для дат с января по август — 5508.","short_description_eng":"Julian calendar structure with Byzantine Anno Mundi year numbering and a September 1 new year.","short_description_rus":"Юлианская календарная структура с византийским летоисчислением от сотворения мира и началом года 1 сентября.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/byzantine.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Byzantine Anno Mundi year numbering over the Julian calendar with September 1 year boundary; historical old-style context plus explicit proleptic caveat.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"callippic_cycle","display_name":"Callippic Cycle","display_name_key":"calendar_display_name_callippic_cycle","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"invariant","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":true,"output_mode":"multi_component","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"callippic_mean_cycle_330_bce_epoch","correlation_id":null,"source_authority":"historical_astronomy_cycle_research_audit","approximation_class":"mean_lunisolar_cycle_projection_not_civil_calendar","boundary_policy":"synthetic_jdn_midnight_bins_not_historical_day_boundary","overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":"mean_lunisolar_correlation","cycle_length":"27759_days_940_lunations_76_years","cycle_anchor":"julian_-329_06_28_mean_cycle_anchor","base_system":"julian","base_calendar":"julian","base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":1601068.5,"native_end_jdn":null,"native_scope_note":"The app projects the mean cycle and its period/day fields, but it does not reconstruct Attic month names, observed crescents, or local ancient civil practice.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"The Callippic Cycle is a 76-year Greek astronomical cycle for comparing lunar months with solar years; it is useful as a historical lunisolar reference, not as a complete daily calendar.","end_user_description":"The Callippic Cycle is a Greek astronomical lunisolar cycle associated with Callippus of Cyzicus. It improves the Metonic 19-year cycle by grouping four Metonic cycles and subtracting one day, giving 76 years = 940 lunar months = 27,759 days. This app shows where a JDN falls in that repeating mean cycle: Callippic period, day in period, mean lunation bin, and Metonic subcycle. It does not reconstruct Attic month names, observed lunar phases, ancient day boundaries, or a civil calendar. Source-backed historical Callippic dating is attested in astronomical material, especially Ptolemy’s Almagest and later papyrus evidence, but arbitrary modern outputs are proleptic projections. ([University of Cologne][1])","short_description":"A 76-year Greek astronomical cycle equating 940 lunar months with 27,759 days. The app projects period/day position only; it is not a full ancient calendar.","longer_explanation_eng":"The Callippic Cycle is a Greek astronomical lunisolar cycle associated with Callippus of Cyzicus. It improves the Metonic 19-year cycle by grouping four Metonic cycles and subtracting one day, giving 76 years = 940 lunar months = 27,759 days. This app shows where a JDN falls in that repeating mean cycle: Callippic period, day in period, mean lunation bin, and Metonic subcycle. It does not reconstruct Attic month names, observed lunar phases, ancient day boundaries, or a civil calendar. Source-backed historical Callippic dating is attested in astronomical material, especially Ptolemy’s Almagest and later papyrus evidence, but arbitrary modern outputs are proleptic projections. ([University of Cologne][1])","longer_explanation_rus":"Цикл Каллиппа — греческий астрономический лунно-солнечный цикл, связанный с Каллиппом Кизикским. Он уточняет 19-летний цикл Метона: четыре метоновых цикла уменьшаются на один день, поэтому получается соотношение 76 лет = 940 лунных месяцев = 27 759 суток. В приложении показывается только положение даты в этом среднем цикле: номер периода Каллиппа, день периода, расчётная лунация и метонов подцикл. Это не реконструкция аттических названий месяцев, наблюдаемых фаз Луны, древней границы суток или гражданского календаря. Историческое употребление датировок по Каллиппу засвидетельствовано в астрономических источниках, но современные даты являются пролептической проекцией. ([University of Cologne][1])","short_description_eng":"A 76-year Greek astronomical cycle equating 940 lunar months with 27,759 days. The app projects period/day position only; it is not a full ancient calendar.","short_description_rus":"76-летний греческий астрономический цикл: 940 лунных месяцев = 27 759 суток. Приложение показывает только положение в цикле, а не полноценный древний календарь.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/calliptic_cycle_2.md","has_research_explanation":true,"research_evidence":{"tier":"merged_duplicate_research_audit","research_labels":["Callippic Cycle NAI answer A","Callippic Cycle NAI answer B"],"implementation_verdict":"implemented_as_mean_cycle_projection","key_findings":["Use the second answer as the primary implementation plan because it is more structured and test-oriented.","Merge the first answer's Alexander Jones source-table cautions and warning against fake Attic-month reconstruction.","Formula basis: 940 lunar months = 76 years = 27,759 days; 499 full plus 441 hollow months also totals 27,759 days."]},"do_not_claim":["full Attic civil-calendar reconstruction","observed lunar crescent dates","historical local sunset boundary","source-backed month names for arbitrary projected dates"],"source_notes":["The implementation is intentionally a mean-cycle projection; 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The old Julian-month relabeling was removed: sources support a Persian/Zoroastrian-derived 12x30+5 structure and late-antique source profiles, not a universal native epoch or a Julian calendar with different month names.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Profile-required Cappadocian historical calendar surface; a named Hemerologium Florentinum profile is available, while unprofiled exact conversion is disabled.","end_user_description":"Surviving evidence for the Cappadocian calendar is limited and comes mainly through Greek/Latin hemerologia, late-antique authors, and manuscript traditions. The best-supported structure is twelve 30-day months followed by five epagomenal days; in one late-antique Julianized tradition the year is stabilized against the Julian calendar. Because sources preserve variant month names and do not give a universal native epoch or year-numbering system, Universal Time Converter should not expose an unrestricted native-to-JDN converter for the default `cappadocian` key.","short_description":"The Cappadocian calendar was an ancient Cappadocian, Iranian/Zoroastrian-derived solar calendar with twelve 30-day months and epagomenal days. Conversion requires a named historical source profile; it is not the Julian calendar with different month names.","longer_explanation_eng":"Surviving evidence for the Cappadocian calendar is limited and comes mainly through Greek/Latin hemerologia, late-antique authors, and manuscript traditions. The best-supported structure is twelve 30-day months followed by five epagomenal days; in one late-antique Julianized tradition the year is stabilized against the Julian calendar. Because sources preserve variant month names and do not give a universal native epoch or year-numbering system, Universal Time Converter should not expose an unrestricted native-to-JDN converter for the default `cappadocian` key.","longer_explanation_rus":"Сохранившиеся сведения о каппадокийском календаре ограничены и в основном переданы через греческие и латинские гемерологии, позднеантичных авторов и рукописные традиции. Наиболее надёжно подтверждённая структура — двенадцать месяцев по 30 дней и пять эпагоменальных дней; в одной позднеантичной традиции календарь был согласован с юлианским годом. Поскольку источники дают варианты названий месяцев и не задают единую нативную эпоху или систему нумерации лет, ключ `cappadocian` не должен по умолчанию выполнять неограниченный пересчёт в JDN.","short_description_eng":"The Cappadocian calendar was an ancient Cappadocian, Iranian/Zoroastrian-derived solar calendar with twelve 30-day months and epagomenal days. Conversion requires a named historical source profile; it is not the Julian calendar with different month names.","short_description_rus":"Каппадокийский календарь — древняя солнечная календарная система Каппадокии иранского/зороастрийского происхождения с двенадцатью 30-дневными месяцами и эпагоменальными днями. Для пересчёта нужен выбранный исторический профиль источника; это не юлианский календарь с другими названиями месяцев.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/cappadocian.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Profile-required Cappadocian historical calendar surface; a named Hemerologium Florentinum profile is available, while unprofiled exact conversion is disabled.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"profile_dependent","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"catholic_liturgical_year","display_name":"Catholic Liturgical Year","display_name_key":"calendar_display_name_catholic_liturgical_year","alias_keys":[],"aliases":[],"system_kind":"overlay","timezone_policy":"canonical","day_boundary":"custom","canonical_timezone":"Europe/Rome","formatter_style":"plain","calendar_family":"calendar","supports_projection":true,"supports_parsing":true,"supports_timezone":true,"supports_time_of_day":true,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":true,"supports_multiple_components":true,"output_mode":"overlay","profile_family":"catholic_jurisdiction","default_profile":"general_roman","available_profiles":["general_roman","united_states","england","italy","philippines"],"profile_labels":{"general_roman":"General Roman","united_states":"United States Catholic","england":"England Catholic","italy":"Italy Catholic","philippines":"Philippines Catholic"},"profile_notes":{"general_roman":"Primary Roman-rite Catholic overlay profile using the romcal provider engine for seasons and major moveable observances, plus curated major fixed-feast support.","united_states":"United States Catholic profile using the same Roman-rite provider engine with jurisdiction-oriented transfer assumptions. National proper and local diocesan distinctions can deepen later without changing the public contract.","england":"England Catholic profile using the same Roman-rite provider engine with England-oriented transfer assumptions. National proper and local diocesan distinctions can deepen later without changing the public contract.","italy":"Italy Catholic profile using the same Roman-rite provider engine with Italy-oriented transfer assumptions. National proper and local diocesan distinctions can deepen later without changing the public contract.","philippines":"Philippines Catholic profile using the same Roman-rite provider engine with Philippines-oriented transfer assumptions. National proper and local diocesan distinctions can deepen later without changing the public contract."},"projection_basis":"jdn","algorithm_id":"romcal_adapter_v1","correlation_id":null,"source_authority":"romcal_pypi","approximation_class":"provider_engine_plus_curated_fixed","boundary_policy":"first_vespers_for_sundays_and_solemnities","overlay_scope":"liturgical_day","service_resolution":"mass_and_liturgy_of_the_hours_cycle","requires_locality":true,"requires_jurisdiction":true,"jurisdiction_family":"catholic","external_provider":"romcal","provider_version":"romcal-4.0.0b6","cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":"gregorian","base_calendar":"gregorian","base_time_scale":null,"overlay_targets":["gregorian"],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":null,"proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Catholic Liturgical Year is exposed as a overlay in the calendar family, with its input shape, output fields, scope notes, and date-view links shown on the reference page.","end_user_description":"The Catholic Liturgical Year is not a separate month-and-day calendar. It is a living Roman Rite rule system and source calendar layered over Gregorian dates. For modern reformed use, the app should resolve Easter, Advent, Lent, Easter Time, Ordinary Time, fixed solemnities, ranks, colors, holy days, readings, and local transfers through a named profile such as General Roman or a national/diocesan calendar. Results before the 1970 effective date of the reformed General Roman Calendar are proleptic unless a separate historical pre-reform calendar is implemented.","short_description":"Roman Rite Catholic liturgical overlay on the Gregorian calendar: it labels a local civil date with season, observance, rank, color, cycles, and service context.","longer_explanation_eng":"The Catholic Liturgical Year is not a separate month-and-day calendar. It is a living Roman Rite rule system and source calendar layered over Gregorian dates. For modern reformed use, the app should resolve Easter, Advent, Lent, Easter Time, Ordinary Time, fixed solemnities, ranks, colors, holy days, readings, and local transfers through a named profile such as General Roman or a national/diocesan calendar. Results before the 1970 effective date of the reformed General Roman Calendar are proleptic unless a separate historical pre-reform calendar is implemented.","longer_explanation_rus":"Католический литургический год — не отдельный календарь с собственными месяцами и днями, а живой богослужебный слой римского обряда поверх григорианских дат. Для современного реформированного обряда приложение должно рассчитывать Пасху, Адвент, Великий пост, Пасхальное и Рядовое время, фиксированные торжества, ранги, цвета, обязательные праздники, чтения и местные переносы через явно выбранный профиль: например, Общий римский календарь, национальный или епархиальный календарь. Даты до вступления реформированного Общего римского календаря в силу в 1970 году являются пролептическими, если не реализован отдельный исторический дореформенный профиль.","short_description_eng":"Roman Rite Catholic liturgical overlay on the Gregorian calendar: it labels a local civil date with season, observance, rank, color, cycles, and service context.","short_description_rus":"Католический литургический слой римского обряда поверх григорианского календаря: он добавляет к местной гражданской дате сезон, празднование, ранг, цвет, циклы и богослужебный 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Exact spacecraft time-code interpretation still needs the actual CCSDS code, time scale, metadata, and leap-second handling where UTC is involved. 🚀","short_description":"CCSDS 1958-epoch Julian-date offset serial: CCSDS JD = JD - 2436204.5.","longer_explanation_eng":"CCSDS Julian Date in this app is a compact serial day count measured from the CCSDS 1958 epoch. Value 0.0 means 1958-01-01T00:00 under the app's JD-offset convention, so the conversion is JD or JDN minus 2436204.5. This is useful for comparing dates against the CCSDS 1958 epoch, but it is not the same as a CCSDS CUC packet field, a CDS day/millisecond field, or a CCSDS ASCII time string. Exact spacecraft time-code interpretation still needs the actual CCSDS code, time scale, metadata, and leap-second handling where UTC is involved. 🚀","longer_explanation_rus":"Юлианская дата CCSDS в этом приложении — это компактный серийный счёт дней от эпохи CCSDS 1958 года. Значение 0,0 означает 1958-01-01T00:00 в принятой приложением JD-схеме, поэтому пересчёт выполняется как JD или JDN минус 2436204,5. Это удобно для сравнения дат с эпохой CCSDS 1958 года, но это не то же самое, что поле CUC в пакете CCSDS, код CDS с днями и миллисекундами или строка времени CCSDS ASCII. Для точной интерпретации времени космической миссии всё равно нужны конкретный код CCSDS, шкала времени, метаданные и обработка високосных секунд там, где используется UTC.","short_description_eng":"CCSDS 1958-epoch Julian-date offset serial: CCSDS JD = JD - 2436204.5.","short_description_rus":"Серийная юлианская дата CCSDS с эпохой 1958 года: CCSDS JD = JD - 2436204,5.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/ccsds_julian_date.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":["Fractional scalar plus separate nonzero time fields are rejected to avoid double-counting.","CCSDS standards text contains a printed Julian-date constant caveat; this app uses the conventional JD midnight correlation 2436204.5."],"has_closed_range":false,"timeline_scope":{"scope_summary":"CCSDS 1958-epoch Julian-date offset serial: CCSDS JD = JD - 2436204.5.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"allowed","input_spec":{"schema":"serial","required_fields":["year"],"use_time_kwargs":true},"representation_schema":"serial","output_schema":{"component_fields":["ccsds_julian_date","hour","minute","second"],"label_fields":[],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"ccsds_julian_date":{"semantic_type":"serial_value","required":true,"repeatable":false,"human_label_key":"field_ccsds_julian_date"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{}},"format_templates":{"plain_date":"{serial_label} {serial_value}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":null},{"key":"ccsds_unsegmented_time_code","display_name":"CCSDS Unsegmented Time Code (CUC)","display_name_key":"cal_dn_ccsds_unsegmented_time_code","alias_keys":[],"aliases":[],"system_kind":"serial","timezone_policy":"invariant","day_boundary":"midnight","canonical_timezone":null,"formatter_style":"plain","calendar_family":"serial","supports_projection":true,"supports_parsing":true,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":true,"supports_variants":false,"supports_multiple_components":false,"output_mode":"scalar","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"jdn","algorithm_id":"ccsds_cuc_seconds_1958_epoch_scalar_v2","correlation_id":null,"source_authority":"research_corpus_2026_06_ccsds_unsegmented_time_code","approximation_class":"scalar_without_packet_encoding","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Implemented as scalar seconds from the CCSDS 1958-01-01 epoch on the app's UTC basis. 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The current app surface is only a UTC-like scalar shortcut unless it is corrected to TAI and given CUC profile metadata. 🛰️","short_description":"CCSDS CUC is a binary spacecraft time code: elapsed TAI seconds, with optional binary fractions, from the 1958-01-01 TAI epoch in its Level 1 profile.","longer_explanation_eng":"CCSDS Unsegmented Time Code, or CUC, is a spacecraft/space-data time-code format. In its standard Level 1 form, it is a binary count of SI seconds, plus optional binary fractions of a second, from the CCSDS epoch 1958-01-01T00:00:00 TAI. It is not a civil calendar and it is not a UTC seconds counter. A full CUC value also has structure: the P-field identifies the epoch/profile and the number of coarse and fractional time octets, while the T-field carries the binary count. The current app surface is only a UTC-like scalar shortcut unless it is corrected to TAI and given CUC profile metadata. 🛰️","longer_explanation_rus":"Несегментированный временной код CCSDS, или CUC, — это формат кодирования времени для космических систем передачи данных. В стандартном профиле Level 1 он представляет собой двоичный счёт SI-секунд и, при необходимости, двоичных долей секунды от эпохи CCSDS 1958-01-01T00:00:00 TAI. Это не гражданский календарь и не счётчик секунд UTC. Полное значение CUC включает структуру: поле P задаёт профиль/эпоху и число октетов грубого и дробного времени, а поле T содержит двоичный счётчик. Текущая поверхность приложения является только UTC-подобным скалярным приближением, пока не добавлены TAI и профильные поля CUC.","short_description_eng":"CCSDS CUC is a binary spacecraft time code: elapsed TAI seconds, with optional binary fractions, from the 1958-01-01 TAI epoch in its Level 1 profile.","short_description_rus":"CCSDS CUC — двоичный временной код космических систем: в профиле Level 1 это прошедшие секунды TAI с возможными двоичными долями от эпохи 1958-01-01 TAI.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/ccsds_unsegmented_time_code.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"CCSDS CUC-like scalar seconds from the 1958 epoch; not a full packet/time-code implementation.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"allowed","input_spec":{"schema":"serial","required_fields":["year"],"use_time_kwargs":false},"representation_schema":"serial","output_schema":{"component_fields":["ccsds_unsegmented_time_code"],"label_fields":[],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"ccsds_unsegmented_time_code":{"semantic_type":"serial_value","required":true,"repeatable":false,"human_label_key":"field_ccsds_unsegmented_time_code"}},"label_specs":{}},"format_templates":{"plain_date":"{serial_label} {serial_value}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":null},{"key":"celtic_eight_day_week","display_name":"Celtic Eight-Day Week","display_name_key":"calendar_display_name_celtic_eight_day_week","alias_keys":[],"aliases":[],"system_kind":"cycle","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"cycle","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"future_celtic_eight_day_week","approximation_class":"reference_only_reconstructed_week_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":false,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Daily positions require a clear locality, period, and anchor before conversion can be trusted.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"The Celtic Eight-Day Week points to ancient or reconstructed market-week structures rather than a universal daily calendar.","end_user_description":"The “Celtic Eight-Day Week” is best treated as a cautious reference topic, not as a working calendar converter. Ancient testimony says Gauls counted time by nights and placed day after night, and Welsh wythnos is a word for a week built from 'eight' plus 'night'. These facts support night-counting and inclusive period language, but they do not give a continuous eight-day Celtic week with named days, an epoch, or a JDN anchor. The converter should therefore show explanation and warnings only.","short_description":"Reference-only page for Celtic night-counting evidence and eight-night week terms; not a date converter.","longer_explanation_eng":"The “Celtic Eight-Day Week” is best treated as a cautious reference topic, not as a working calendar converter. Ancient testimony says Gauls counted time by nights and placed day after night, and Welsh wythnos is a word for a week built from 'eight' plus 'night'. These facts support night-counting and inclusive period language, but they do not give a continuous eight-day Celtic week with named days, an epoch, or a JDN anchor. The converter should therefore show explanation and warnings only.","longer_explanation_rus":"«Кельтская восьмидневная неделя» должна рассматриваться как осторожная справочная тема, а не как работающий календарный конвертер. Античный источник сообщает, что галлы считали промежутки времени ночами и что день следовал за ночью; валлийское слово wythnos обозначает неделю и связано с компонентами «восемь» и «ночь». Эти данные подтверждают ночной и включительный способ счёта периодов, но не дают непрерывной кельтской восьмидневной недели с названиями дней, эпохой и привязкой к JDN. 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Это не простая арифметическая система с одной постоянной эпохой; для точного пересчёта нужен официальный календарный источник, таблица или астрономический профиль с современными правилами UTC+08:00.","short_description_eng":"A modern Chinese lunisolar calendar: lunar months begin at new moons, leap months are rule-based, and calculations use the UTC+08:00 Chinese calendar day.","short_description_rus":"Современный китайский лунно-солнечный календарь: месяцы начинаются с новолуний, вставные месяцы задаются правилами, расчётный день относится к UTC+08:00.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chinese_lunar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Modern Chinese lunisolar public backbone; not a source-critical reconstruction of every historical Chinese calendar.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"discouraged","input_spec":{"schema":"year_month_day","required_fields":["year","month","day"],"use_time_kwargs":true},"representation_schema":"year_month_day","output_schema":{"component_fields":["year","month","day","hour","minute","second"],"label_fields":["month_name","month_name_format","era","era_format"],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"year":{"semantic_type":"year","required":true,"repeatable":false,"human_label_key":"field_year"},"month":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month"},"day":{"semantic_type":"day","required":true,"repeatable":false,"human_label_key":"field_day"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{"month_name":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name"},"month_name_format":{"semantic_type":"month","required":true,"repeatable":false,"human_label_key":"field_month_name_format"},"era":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era"},"era_format":{"semantic_type":"era","required":true,"repeatable":false,"human_label_key":"field_era_format"}}},"format_templates":{"plain_date":"{year:04d}-{month:02d}-{day:02d}","fancy_date":"{month_name_display} {day}, {year}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":{"ukr":{"fancy_date":"{day} {month_name_display} {year}"},"tha":{"fancy_date":"{day} {month_name_display} {year}"},"rus":{"fancy_date":"{day} {month_name_display} {year}"}}},{"key":"chinese_shixian_calendar","display_name":"Shixian Calendar","display_name_key":"calendar_display_name_chinese_shixian_calendar","alias_keys":["calendar_alias_seasonal_constitution_calendar","calendar_alias_chongzhen_calendar"],"aliases":["Seasonal Constitution Calendar","Chongzhen Calendar"],"system_kind":"observational_framework","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"observational_framework","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":true,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"chinese_historical_reference_profile_v1","correlation_id":null,"source_authority":"shixian_qing_joseon_secondary_synthesis","approximation_class":"reference_only_source_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":true,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Shixian is represented as a Qing/Joseon family of historical calendars influenced by Western astronomy, not a single timeless modern Chinese rule set. 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Поэтому сейчас эта страница является справочной: она показывает названия, варианты и требования к реализации, но намеренно не переводит произвольный JDN или григорианскую дату в дату Шисянь.","short_description_eng":"Reference-only Qing/Joseon Shixian calendar family; conversion is blocked until a source edition, meridian, and historical astronomical method are selected.","short_description_rus":"Справочный профиль календарного семейства Шисянь эпохи Цин и Чосона; конвертация заблокирована до выбора источника, меридиана и исторической астрономической модели.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chinese_shixian_calendar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference profile for the Shixian / Seasonal Constitution Calendar family with version and meridian sensitivity 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Conversion should stay disabled until the app has a selected base Chinese calendar or sexagenary-day profile.","short_description":"Reference-only Chinese ten-day xun naming layer; not a standalone date converter.","longer_explanation_eng":"The Chinese Ten-Day Xun is best treated as a reference-only naming layer. The word 旬 can mean a ten-day period, and Chinese date language can use 上旬, 中旬, and 下旬 for the first, middle, and last part of a month. In early Chinese calendrical evidence, xun also appears as a ten-day week tied to the ten-day stem cycle inside the sexagenary system. These are real historical and modern usages, but they are not one standalone calendar with its own epoch, months, or JDN correlation. Conversion should stay disabled until the app has a selected base Chinese calendar or sexagenary-day profile.","longer_explanation_rus":"Китайский десятидневный сюнь следует показывать как справочную систему названий, а не как самостоятельный календарь. Слово 旬 может означать десятидневный период; в китайской датировке встречаются 上旬, 中旬 и 下旬 — первая, средняя и последняя часть месяца. В ранних китайских источниках сюнь также связан с десятидневной «неделей» внутри цикла небесных стволов и шестидесятеричного цикла. Эти употребления реальны, но они не образуют единого календаря с собственной эпохой, месяцами и привязкой к JDN. Преобразование дат должно оставаться отключённым, пока не выбран базовый китайский календарь или профиль шестидесятеричного дня.","short_description_eng":"Reference-only Chinese ten-day xun naming layer; not a standalone date converter.","short_description_rus":"Справочная китайская десятидневная система «сюнь»; не самостоятельный конвертер дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chinese_ten_day_xun.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Profile-gated Chinese xun naming layer. 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The implementation preserves the 676-year / 8361-month headline constants and the true-versus-mean new-moon warning, while blocking public conversion until phase boundaries, court rules, epoch, and intercalation logic are source-checked.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference profile for the Wuyin Yuan Calendar with Tang constants and the Zhenguan true/mean new-moon issue made explicit.","end_user_description":"The Wuyin Yuan Calendar was an early Tang imperial astronomical calendar system, not a simple modern date converter. It preserves important constants such as a 676-year cycle, 249 intercalary months, and 8361 lunations, and it is historically important because it involved disputes over true versus mean new-moon calculation. Universal Time Converter should expose it as a reference profile only until a source-checked Chinese historical lunisolar engine can model the Tang court rules, source edition, new moons, solar terms, intercalary months, and the Zhenguan-period method change.","short_description":"Reference-only early Tang Chinese li profile; constants are shown, date conversion is blocked.","longer_explanation_eng":"The Wuyin Yuan Calendar was an early Tang imperial astronomical calendar system, not a simple modern date converter. It preserves important constants such as a 676-year cycle, 249 intercalary months, and 8361 lunations, and it is historically important because it involved disputes over true versus mean new-moon calculation. Universal Time Converter should expose it as a reference profile only until a source-checked Chinese historical lunisolar engine can model the Tang court rules, source edition, new moons, solar terms, intercalary months, and the Zhenguan-period method change.","longer_explanation_rus":"Календарь Уинь юань ли — раннетанская императорская астрономическая система, а не простой современный конвертер дат. Для него важны такие структурные константы, как цикл в 676 лет, 249 вставных месяцев и 8361 лунация, а также спор о расчёте истинного и среднего новолуния. В Universal Time Converter его следует показывать только как справочный профиль, пока не будет реализован проверенный по источникам движок исторического китайского лунно-солнечного календаря с правилами танского двора, выбранным изданием источника, новолуниями, солнечными терминами, вставными месяцами и изменением метода в период Чжэньгуань.","short_description_eng":"Reference-only early Tang Chinese li profile; constants are shown, date conversion is blocked.","short_description_rus":"Справочный раннетанский профиль ли; показаны константы, конвертация дат заблокирована.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chinese_wuyin_calendar.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference profile for the Wuyin Yuan Calendar with Tang constants and the Zhenguan true/mean new-moon issue made 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To convert anything safely, the app would need a specific source authority, region, source edition, dating method, uncertainty model, and base calendar or range model. Until those profiles exist, this page should remain reference-only.","short_description":"Chronological frameworks are source-defined ways to organize historical or archaeological time; they are reference labels and ranges, not a standalone date converter.","longer_explanation_eng":"Chronological frameworks are ways scholars organize the past into periods, phases, sequences, ranges, and source-defined labels. They are useful for archaeology, history, art history, museum data, and cultural heritage metadata, but they are not a single calendar. A framework may say that an object belongs to a period such as \"Early Bronze Age\" or that an event falls within a calibrated date range, but that does not automatically identify a unique day. To convert anything safely, the app would need a specific source authority, region, source edition, dating method, uncertainty model, and base calendar or range model. Until those profiles exist, this page should remain reference-only.","longer_explanation_rus":"Хронологические рамки — это способы, с помощью которых исследователи упорядочивают прошлое по периодам, фазам, последовательностям, диапазонам и меткам из конкретных источников. Они важны для археологии, истории, истории искусства, музейных данных и метаданных культурного наследия, но не являются единым календарём. Такая рамка может указать, что объект относится к «раннему бронзовому веку» или что событие попадает в калиброванный диапазон дат, однако это не означает единственный день. Для безопасного преобразования приложению нужен конкретный источник или авторитетный список, регион, редакция источника, метод датировки, модель неопределённости и базовый календарь или модель диапазонов. До появления таких профилей этот раздел должен оставаться справочным.","short_description_eng":"Chronological frameworks are source-defined ways to organize historical or archaeological time; they are reference labels and ranges, not a standalone date converter.","short_description_rus":"Хронологические рамки — это заданные источниками способы упорядочивать историческое или археологическое время; это справочные метки и диапазоны, а не самостоятельный конвертер дат.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chronological_frameworks.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only Chronological Frameworks entry. 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The research does not support arbitrary date conversion without a source profile, locality, event record, or edition-specific table.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference-only Chula Sakarat Era entry. Public conversion is intentionally disabled until the required profile/source infrastructure exists.","end_user_description":"Chula Sakarat is an era or year-counting system used with several mainland Southeast Asian lunisolar calendars. It is historically important in Thai, Burmese/Myanmar, Lao, Lan Na, Khmer, and related records, but it is not safe as a standalone date converter. To convert a Chula Sakarat date, the app must know the regional calendar profile, month numbering, intercalary rules, lunar fortnight/day, and the Julian or Gregorian display convention.","short_description":"A Southeast Asian era label used with regional lunisolar calendars; not a standalone converter.","longer_explanation_eng":"Chula Sakarat is an era or year-counting system used with several mainland Southeast Asian lunisolar calendars. It is historically important in Thai, Burmese/Myanmar, Lao, Lan Na, Khmer, and related records, but it is not safe as a standalone date converter. To convert a Chula Sakarat date, the app must know the regional calendar profile, month numbering, intercalary rules, lunar fortnight/day, and the Julian or Gregorian display convention.","longer_explanation_rus":"Чула-Сакарат — это эра, то есть система нумерации лет, применявшаяся вместе с разными лунно-солнечными календарями материковой Юго-Восточной Азии. Она важна для тайских, бирманских/мьянманских, лаосских, ланнатайских, кхмерских и родственных источников, но сама по себе не является безопасным конвертером дат. Для пересчёта нужны региональный календарный профиль, правила нумерации месяцев, вставных месяцев и дней, лунная половина месяца, день и политика вывода в юлианском или григорианском календаре.","short_description_eng":"A Southeast Asian era label used with regional lunisolar calendars; not a standalone converter.","short_description_rus":"Юго-восточноазиатская эра для региональных лунно-солнечных календарей; не самостоятельный конвертер.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/chula_sakarat.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":[],"has_closed_range":false,"timeline_scope":{"scope_summary":"Reference-only Chula Sakarat Era entry. 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Это не юлианский календарь, не обычная астрономическая юлианская дата и не модифицированная юлианская дата. Для точных моментов времени нужно указывать шкалу времени: в пользовательском контракте приложения может использоваться UTC, но в документации SIMU-CIC/CelestLab CJD задана в шкале TREF.","short_description_eng":"A CNES serial day count: JD minus 2433282.5, with day zero at 1950-01-01 midnight.","short_description_rus":"Серийный счёт дней CNES: JD минус 2433282.5, ноль — в полночь 1950-01-01.","research_explanation_source":"docs/research_output/calendar_research_outputs/answers/cnes_julian_date.md","has_research_explanation":true,"research_evidence":null,"do_not_claim":[],"source_notes":["Fractional scalar plus separate nonzero time fields are rejected to avoid double-counting.","Precision work must record the intended time scale; some CNES tooling uses TREF rather than strictly UTC."],"has_closed_range":false,"timeline_scope":{"scope_summary":"CNES serial day count: JD minus 2433282.5, with day zero at 1950-01-01 midnight.","has_closed_range":false,"native_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"proleptic_range":{"start_jdn":null,"end_jdn":null,"start_standard":null,"end_standard":null},"pre_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"post_native_projection":{"boundary_jdn":null,"boundary_standard":null,"policy":null},"timeline_color_hints":{"native":"green","proleptic":"yellow","unsupported":"red"}},"proleptic_policy":"allowed","input_spec":{"schema":"serial","required_fields":["year"],"use_time_kwargs":true},"representation_schema":"serial","output_schema":{"component_fields":["cnes_julian_date","hour","minute","second"],"label_fields":[],"formatted_fields":["date","date_fancy","date_native","date_local","time"],"component_specs":{"cnes_julian_date":{"semantic_type":"serial_value","required":true,"repeatable":false,"human_label_key":"field_cnes_julian_date"},"hour":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_hour"},"minute":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_minute"},"second":{"semantic_type":"label_only","required":true,"repeatable":false,"human_label_key":"field_second"}},"label_specs":{}},"format_templates":{"plain_date":"{serial_label} {serial_value}","time":"{hour:02d}:{minute:02d}:{second_text}"},"format_locale_variants":null},{"key":"coligny_calendar","display_name":"Coligny Calendar","display_name_key":"calendar_display_name_coligny_calendar","alias_keys":[],"aliases":[],"system_kind":"calendar","timezone_policy":"invariant","day_boundary":"custom","canonical_timezone":null,"formatter_style":"plain","calendar_family":"calendar","supports_projection":false,"supports_parsing":false,"supports_timezone":false,"supports_time_of_day":false,"supports_historical_native_range":false,"supports_proleptic_projection":false,"supports_variants":false,"supports_multiple_components":false,"output_mode":"label_only","profile_family":null,"default_profile":null,"available_profiles":[],"profile_labels":null,"profile_notes":null,"projection_basis":"reference_metadata","algorithm_id":"future_research_reference_profile_v1","correlation_id":null,"source_authority":"research_corpus_2026_06_coligny_calendar","approximation_class":"reference_only_artifact_table_required","boundary_policy":null,"overlay_scope":null,"service_resolution":null,"requires_locality":false,"requires_jurisdiction":true,"jurisdiction_family":null,"external_provider":null,"provider_version":null,"cycle_subtype":null,"cycle_length":null,"cycle_anchor":null,"base_system":null,"base_calendar":null,"base_time_scale":null,"overlay_targets":[],"naming_targets":[],"native_start_jdn":null,"native_end_jdn":null,"native_scope_note":"Coligny Calendar is exposed as a reference-only surface from `research_corpus_2026_06_coligny_calendar`. The research does not support arbitrary date conversion without a source profile, locality, event record, or edition-specific table.","proleptic_start_jdn":null,"proleptic_end_jdn":null,"scope_summary":"Reference-only Coligny Calendar entry. Public conversion is intentionally disabled until the required profile/source infrastructure exists.","end_user_description":"The Coligny Calendar is an ancient Gaulish lunisolar calendar preserved on a fragmentary bronze tablet found at Coligny, France. It gives month names, 29- and 30-day lunar months, intercalary months, half-month divisions, and many day notations. What it does not preserve is an absolute epoch. Scholars disagree on important reconstruction details, including how the 5-year table belongs to a longer cycle and how some missing or anomalous month lengths should be restored. For this reason, Universal Time Converter should treat Coligny as a source-critical reference page or source-table profile, not as a converter from modern dates to ancient Gaulish dates. 🌓","short_description":"Fragmentary ancient Gaulish lunisolar calendar; source-table reference only, not a safe JDN converter.","longer_explanation_eng":"The Coligny Calendar is an ancient Gaulish lunisolar calendar preserved on a fragmentary bronze tablet found at Coligny, France. It gives month names, 29- and 30-day lunar months, intercalary months, half-month divisions, and many day notations. What it does not preserve is an absolute epoch. Scholars disagree on important reconstruction details, including how the 5-year table belongs to a longer cycle and how some missing or anomalous month lengths should be restored. For this reason, Universal Time Converter should treat Coligny as a source-critical reference page or source-table profile, not as a converter from modern dates to ancient Gaulish dates. 🌓","longer_explanation_rus":"Колиньский календарь — древний галльский лунно-солнечный календарь, сохранившийся на фрагментарной бронзовой таблице, найденной во французском Колиньи. Таблица даёт названия месяцев, 29- и 30-дневные лунные месяцы, вставные месяцы, деление месяца на половины и множество дневных помет. Но она не даёт абсолютной эпохи. В научной литературе спорными остаются важные детали реконструкции: связь пятилетней таблицы с более длинным циклом и восстановление некоторых лакун и необычных длин месяцев. 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Month names vary by Coptic dialect, Arabic church usage, and English transliteration. ✨","longer_explanation_rus":"Коптский, или александрийский, календарь — фиксированный солнечный календарь, особенно важный для Коптской православной церкви и египетской сельскохозяйственной традиции. В нём 12 месяцев по 30 дней и короткий 13-й период из 5 дней, а в високосном коптском году — из 6 дней. Годы обычно считаются по эре мучеников, AM: 1-й год начинается 29 августа 284 года по юлианскому календарю. Для гражданского отображения конвертер использует обычную полуночную границу даты в выбранном часовом поясе; богослужебный день, который может начинаться с вечера, отдельно не моделируется. 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