Inspect locales, calendars, and temporal contracts.
This index is the browser-facing map of the system. It links to locale coverage, per-locale translation detail, and calendar metadata with explicit input and output schemas.
Locale Coverage
See completion status, fallback chains, missing keys, and drill down into each locale.
Calendar Reference
Browse timezone policy, day boundary, input schema, and per-calendar output shape from a fixed reference instant.
Timeline Reference
Compare native and proleptic system bands over a shared range, then layer curated event groups on top.
Jurisdiction Reference
Inspect the first place-aware historical civil-use stories for Russia and selected Western European comparison cases.
Year-Beginning Comparison
Compare September 1, March 25, March 1, and January 1 local year openings on the same historical day.
Date Applicability Query
Ask which systems are native, proleptic, broadly applicable, or unsupported on one queried historical day.
Dedicated Day Page
Drive one day through a family-aware input form, add comparison systems, and inspect locality or jurisdiction context.
Bulk Conversion Lab
Use the old exhaustive convert-to-everything workflow for contributor testing, regression checks, and schema debugging.
Orthodox Calendar Guide
See a clear old-style/new-style explanation of how Orthodox feast and day logic stays tied to the Julian basis.
Mesoamerican Date Guide
See how Long Count, Calendar Round, Tzolk'in, Tōnalpōhualli, and Xiuhpōhualli relate as linear and repeating date systems.
Catholic Liturgical Guide
Inspect the Roman-rite Catholic overlay with profiles, first-vespers logic, and jurisdiction-aware liturgical context.
Islamic Prayer Guide
See how prayer times, Hijri feast and fasting context, and maghrib-based day switching work in the Islamic overlay.
Jewish Liturgical Guide
Explore the Jewish overlay with Hebrew date context, Omer and readings, and locality-aware halachic times.
Soviet Reform Guide
Understand the five-day and six-day Soviet work-week reforms as a historical overlay over Gregorian civil dating.
System Backlog
Track planned systems, research-heavy frameworks, and the stable keys used for roadmap work.
Implemented Systems
Browse the real registered systems currently available in the app, grouped by type and derived from actual metadata.