Compute Easter Sunday on the Julian calendar (Giulian computus), still used by several Eastern Orthodox and Oriental Orthodox churches to determine the date of Pascha independently of the Gregorian civil calendar.
What this tool calculates
For a given year, the tool applies the Julian Easter algorithm and returns the corresponding Julian calendar date. That date often falls later than Western (Gregorian) Easter in the same civil year because Julian March 21 aligns with a different point in the solar year.
Background
Julian Easter follows the same ecclesiastical rule—first Sunday after the first full moon on or after March 21—but March 21 is interpreted on the Julian solar calendar, which currently lags the Gregorian calendar by 13 days. Pascha therefore frequently occurs one to five weeks after Western Easter.
When to use it
- Planning around Orthodox Pascha in Greece, Russia, Serbia, and related jurisdictions
- Academic or interfaith comparisons between Western and Eastern Easter dates
- Verifying liturgical calendars that list Julian feasts
Limitations
Some autocephalous churches (e.g., Finnish Orthodox, parts of the Orthodox Church of America) may use the Gregorian calendar for Easter; always confirm with the specific jurisdiction. Civil dates displayed in daily life are Gregorian—convert accordingly when booking travel or public events. Pre-reform historical observance may not match modern tables.
Example
In 2025, Julian-calendar Easter (Pascha) falls on 20 April Julian, which corresponds to 3 May on the Gregorian civil calendar—later than Western Easter on 20 April Gregorian.