Easter Date Calculator

How to use

1. 1Read the top panel for the next upcoming Easter Sunday in both traditions with a live day countdown from today.
2. 2Type any year from 1583 to 9999 in the Year box (or use This year, +1, +5, +10 quick buttons). Western and Orthodox Easter appear side by side with the exact date, the day of the week, and copy buttons for the ISO and long-form versions.
3. 3Switch Both, Western only, or Orthodox only to focus on the tradition you care about. The comparison panel tells you whether the two dates match that year and how many days apart they are when they do not.
4. 4Scroll to the Holy Week and Easter card to see every moveable feast for the chosen year: Ash Wednesday, Palm Sunday, Maundy Thursday, Good Friday, Holy Saturday, Easter Monday, Ascension Day, and Pentecost. Copy dates writes the full list as a plain-text block.
5. 5Set From year and To year (or hit This decade, Next 10 years, Next 25 years, 21st century) to generate a side-by-side comparison table of Western and Orthodox Easter for every year in the range, with same-date years highlighted. Copy table (TSV) drops the whole table into a spreadsheet.

About this tool

Easter Date Calculator finds the date of Easter Sunday for any year and shows both the Western (Gregorian) and Eastern (Julian / Orthodox) computations side by side. The Western date uses the Anonymous Gregorian computus, the Meeus-Jones-Butcher algorithm widely cited by the Roman Catholic Church, most Protestant denominations, the Anglican Communion, and many other Christian traditions. The Orthodox date uses the Meeus Julian algorithm, computed on the Julian calendar (the date that the Russian, Greek, Serbian, Romanian, Bulgarian, Georgian, Antiochian, and other Eastern Orthodox churches actually celebrate Pascha), and then converted to the Gregorian calendar so the date matches a civil calendar. Easter Sunday is always the first Sunday after the first ecclesiastical full moon on or after the spring equinox, but the two traditions use different calendars and different lunar tables, so Orthodox Easter usually falls one to five weeks after Western Easter and the two only coincide in years where the calendars and lunar phases happen to line up. The headline panel shows the next upcoming Easter for both traditions with a live day countdown, so a quick check answers when is Easter, when is Greek Easter, when is Russian Easter, and how many days until Easter without needing to know which tradition you are looking at. The year picker accepts any year from 1583 (the first full Gregorian year) through 9999 and returns Easter Sunday, weekday, ISO date, and copy-friendly long-form date. The same year also generates the full set of moveable feasts that are derived from Easter (Ash Wednesday and the first day of Lent at 46 days before Easter, Palm Sunday at 7 days before, Maundy Thursday at 3 days before, Good Friday at 2 days before, Holy Saturday the day before, Easter Sunday itself, Easter Monday the day after, Ascension Day 39 days after, and Pentecost / Whit Sunday 49 days after) for both the Western and Orthodox calendars, so the page answers questions like when is Ash Wednesday, when is Good Friday, when is Pentecost, and when is Ascension Day in one place. The multi-year range table compares Western and Orthodox Easter side by side for up to 200 consecutive years and highlights the years when the two traditions celebrate Easter on the same date, which makes it easy to see at a glance how often Easter dates align across the Western and Eastern Christian calendars. A TSV copy button drops the entire comparison table into a spreadsheet or note. Useful for planning church services, school holidays, public holidays in countries that observe Good Friday, Easter Monday, or Pentecost Monday, family travel around Holy Week, business calendars that need to mark moveable Christian holidays years in advance, students learning the computus, and anyone curious why Western and Orthodox Easter sometimes fall five weeks apart. Every calculation runs in your browser. The years you check are never uploaded.

Free to use. Works in your browser. No signup, no login.