Western Easter
Sunday, April 15, 2001
Gregorian computus. Golden number 7, epact 5, Paschal full moon April 8.
Easter 2001
Easter 2001: Sunday, April 15
In 2001 Easter falls on Sunday, April 15, 2001 for Western and Orthodox churches alike: the Gregorian and the Julian reckoning arrive at the same Sunday.
Orthodox Easter
Sunday, April 15, 2001
Julian computus: April 2 in the Julian calendar, plus 13 days to reach the Gregorian calendar.
Both Easters fall on April 15 in 2001. They last fell on the same day in 1990 (April 15). They next fall on the same day in 2004 (April 11).
Western · Apr 15
Orthodox · Apr 15
MarchAprilMayThe moving feasts of 2001
Western feasts, 2001
| Feast | Date | From Easter |
|---|---|---|
| Shrove Tuesday | Tuesday, February 27, 2001 | −47 days |
| Ash Wednesday | Wednesday, February 28, 2001 | −46 days |
| Palm Sunday | Sunday, April 8, 2001 | −7 days |
| Maundy Thursday | Thursday, April 12, 2001 | −3 days |
| Good Friday | Friday, April 13, 2001 | −2 days |
| Holy Saturday | Saturday, April 14, 2001 | −1 day |
| Easter Sunday | Sunday, April 15, 2001 | Easter Sunday |
| Easter Monday | Monday, April 16, 2001 | +1 day |
| Ascension Day | Thursday, May 24, 2001 | +39 days |
| Pentecost | Sunday, June 3, 2001 | +49 days |
Orthodox feasts, 2001
| Feast | Date | From Easter |
|---|---|---|
| Clean Monday | Monday, February 26, 2001 | −48 days |
| Palm Sunday | Sunday, April 8, 2001 | −7 days |
| Great and Holy Friday | Friday, April 13, 2001 | −2 days |
| Pascha (Easter Sunday) | Sunday, April 15, 2001 | Easter Sunday |
| Ascension | Thursday, May 24, 2001 | +39 days |
| Pentecost | Sunday, June 3, 2001 | +49 days |
Each date is Easter Sunday plus or minus a fixed number of days; the offsets and their sources are on the about page. Observance varies by church and by country. Whether a feast is a day off work is a matter of each country’s law: Holidays lists each country’s public holidays, off the open Nager.Date database.
How early is Easter in 2001?
April 15 is date 25 of the 35 that Western Easter can take, March 22 to April 25: 24 days after the earliest possible date and 10 days before the latest. Of the 201 Easters from 1900 to 2100, 136 fall on an earlier date than this one and 56 fall on a later date. 8 other years in that span share the date: 1900, 1906, 1979, 1990, 2063, 2074, 2085, 2096. Before 2001, Western Easter last fell on April 15 in 1990; after 2001 it next does in 2063.
In the 2000s Western Easter ran from March 23 (2008) to April 23 (2000); 2001’s April 15 is the seventh-earliest of the ten. Across the twenty-first century (2001–2100) Western Easter falls on April 15 in 5 years, and the Western and Orthodox Easters share a Sunday in 31 years.
Orthodox Easter on April 15 is April 2 in the Julian calendar; 13 days carry it to the Gregorian calendar in 2001. From 1900 to 2100 Orthodox Easter falls on an earlier Gregorian date in 57 years and on a later one in 136 years; it falls on the same date in 1906, 1917, 1928, 1990, 2012, 2085, 2096.
The earliest and latest Easters from 1900 to 2100, with how often each date occurs, are on their own page.
The arithmetic for 2001
7Golden number: the year’s place in the 19-year cycle of the moon, (2001 mod 19) + 1.
5Gregorian epact: the age of the reckoned moon at the start of the year.
April 8Paschal full moon of the Gregorian reckoning, a Sunday. Easter is the Sunday after it.
April 12Paschal full moon of the Julian reckoning in Gregorian dates (Julian March 30), a Thursday.
The two algorithms, worked for 2001
- Western: the Anonymous Gregorian algorithm
a=6 b=20 c=1 d=5 e=0 f=1 g=6 h=18 i=0 k=1 l=6 m=0h + l − 7m + 114 = 138, and 138 ÷ 31 = 4 remainder 14: month 4, day 14 + 1. April 15- Orthodox: Meeus’s Julian algorithm
a=1 b=6 c=6 d=9 e=2d + e + 114 = 125, and 125 ÷ 31 = 4 remainder 1: Julian April 2. Plus 13 days: April 15
How the date of Easter is calculated explains each letter. The dates on this page agree with the US Census Bureau table (Western), the 5ko.free.fr tables (Western and Orthodox), each read September 28, 2026.