Old style
Julian basis
This is the calendar basis to which the Orthodox feasts and liturgical day logic are tied in the app.
Orthodox Explainer
Orthodox Calendar Guide
Old style first. Orthodox feast, Paschalia, and saint logic in this app is tied to the Julian/Byzantine basis; Gregorian new style is shown second as the modern civil mapping.
Overlay output for this day
Key fields
Structured details
Interpretation notes
Try this overlay on a real day
Choose a day and the page will show the full overlay output instead of only its metadata contract.
The simple rule
Julian is the old style. Gregorian is the new style. Orthodox observance in this product follows the Julian/Byzantine liturgical structure first, including the fixed commemorations and Julian Paschalia, and then shows how that date maps onto the modern civil Gregorian date.
New style
Gregorian civil date
This is the modern civil comparison date users usually expect to see in ordinary daily life and public reference contexts.