Calculate Western and Orthodox Easter dates for any year, plus related dates like Ash Wednesday, Good Friday, and Pentecost.
Enter a year between 1 and 9999 to calculate the dates of Western (Gregorian) and Orthodox Easter, along with related Christian observances.
Also in Calendar Reference
Dates & Time
Calculate the date of Easter Sunday for any year, with both Western (Gregorian) and Orthodox results plus related liturgical dates.
Western Easter is computed using the Anonymous Gregorian Computus algorithm, which determines the first Sunday after the Paschal full moon. Orthodox Easter uses the Julian calendar method and then converts the result to the Gregorian calendar, which is why it often falls on a different date.
From Easter Sunday the calculator derives Ash Wednesday (46 days before), Palm Sunday (7 days before), Good Friday (2 days before), Ascension Thursday (39 days after), and Pentecost (49 days after).
Frequently asked questions
Western churches use the Gregorian calendar while most Orthodox churches use the Julian calendar for Easter computation. The two methods agree in some years but can diverge by one to five weeks.
Western Easter can fall between March 22 and April 25. Orthodox Easter (Gregorian equivalent) can range from April 4 to May 8.
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