Easter will
fall on the first Sunday after the first full Moon that falls on or after
March 21 (not, as commonly belived, the "first Sunday after the first
full Moon in Spring" where Spring is defined as the Season which begins with
the astronomical vernal equinox).
The earliest possible date for Easter is March 22, and the latest possible
date for it is April 25.
| 2003 |
April 20 |
| 2004 |
April 11 |
| 2005 |
March 27 |
| 2006 |
April 16 |
| 2007 |
April 8 |
| 2008 |
March 23 |
| 2009 |
April 12 |
| 2010 |
April 4 |
| 2011 |
April 24 |
| 2012 |
April 8 |
| 2013 |
March 31 |
| 2014 |
April 20 |
| 2015 |
April 5 |
| 2016 |
March 27 |
| 2017 |
April 16 |
| 2018 |
April 1 |
| 2019 |
April 21 |
| 2021 |
April 12 |
For the mathematically
minded, there is an algorithm one can use to determine the date of Easter
for any given year. In the following equations:
y=year of Easter
d=day of Easter
m=month of Easter
All variables are integers; drop all remainders from division
operations:
c = y / 100
n = y - 19 * ( y / 19 )
k = ( c - 17 ) / 25
i = c - c / 4 - ( c - k ) / 3 + 19 * n + 15
i = i - 30 * ( i / 30 )
i = i - ( i / 28 ) * ( 1 - ( i / 28 ) * ( 29 / ( i + 1 ) ) * ( ( 21 - n )
/ 11 ) )
j = y + y / 4 + i + 2 - c + c / 4
j = j - 7 * ( j / 7 )
l = i - j
m = 3 + ( l + 40 ) / 44
d = l + 28 - 31 * ( m / 4 )
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