Frequency of the Date of Easter over one 400 year Gregorian Cycle

First published 1997 March 12; last updated 1997 March 12 by M.J. Montes.

The Gregorian Calendar repeats itself every 400 years, although the dates of the Gregorian Easter have a much longer cycle: 5,700,000 years. Since the Gregorian Calendar was instituted in October, 1582, the first complete cycle in the Gregorian calendar ended in October, 1982. This table has the frequency of occurrences of various dates of Easter over that 400 year period.

You may also be interested in the frequency of the date of Easter during 1875 to 2124, or over a complete Gregorian Easter cycle.

    
Frequency of Easter over the first complete Gregorian Calendar Period,
Oct. 1582 to Oct. 1982
  
     Date Ordered        |     Ordered by Descending Frequency
             Number of   |               Number of  
Month  Date  Occurrences |  Month  Date  Occurrences   % 
3       22      04       |  4       05      17        4.25
3       23      06       |  4       06      17        4.25
3       24      02       |  4       11      17        4.25
3       25      07       |  4       16      17        4.25
3       26      12       |  3       31      16        4.00
3       27      13       |  4       10      16        4.00
3       28      10       |  4       01      15        3.75
3       29      12       |  4       17      15        3.75
3       30      12       |  4       02      14        3.50
3       31      16       |  4       14      14        3.50
4       01      15       |  4       18      14        3.50
4       02      14       |  4       21      14        3.50
4       03      10       |  3       27      13        3.25
4       04      11       |  4       12      13        3.25
4       05      17       |  3       26      12        3.00
4       06      17       |  3       29      12        3.00
4       07      11       |  3       30      12        3.00
4       08      12       |  4       08      12        3.00
4       09      09       |  4       13      12        3.00
4       10      16       |  4       15      12        3.00
4       11      17       |  4       19      12        3.00
4       12      13       |  4       22      12        3.00
4       13      12       |  4       04      11        2.75
4       14      14       |  4       07      11        2.75
4       15      12       |  3       28      10        2.50
4       16      17       |  4       03      10        2.50
4       17      15       |  4       20      10        2.50
4       18      14       |  4       09      09        2.25
4       19      12       |  3       25      07        1.75
4       20      10       |  3       23      06        1.50
4       21      14       |  3       22      04        1.00
4       22      12       |  4       23      04        1.00
4       23      04       |  4       24      04        1.00
4       24      04       |  4       25      04        1.00
4       25      04       |  3       24      02        0.50

Calculation of the Ecclesiastical Calendar

Last updated 1997 March 12.

Marcos Montes
mmontes@no.spam.smart.net