Dates of the Easter of the Catholics and the Protestants
Decades
1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090
0   15 27M 4 20 24M 9 17 29M 6 15
23
4 12 21 1 10 18 30M 7 16  0
1   7 16 27M 5 13 22 2 11 19 31M 15 24 4 13 21 2 10 19 30M 8  1
2   30M 7 16 27M 5 13 22 2 11 19 31M 8 17 28M 6 21 26M 10 19 30M  2
3   12 23M 1 16 25 5 14 22 3 11 20 31M 9 17 29M 6 15 26M 4 12  3
4   3 12 20 1 9 18 29M 14 22 3 11 20 31M 9 17 29M 6 15 26M 4  4
5   23 4 12 21 1 10 18 30M 7 16 27M 5 20 25M 9 18 29M 7 15 24  5
6   15 23 4 12 21 1 10 18 30M 7 16 27M 5 13 25M 2 11 19 31M 15  6
7   31M 8 17 28M 6 21 26M 10 19 30M 8 16 28M 5 14 22 3 11 20 31M  7
8   19 31M 8 17 28M 6 14 26M 3 12 23M 1 16 25 5 14 22 3 11 20  8
9   11 20 31M 9 17 29M 6 15 26M 4 12 21 1 10 18 30M 14 23 3 12  9
1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090
The dates relate to April, except those which have the indication M and refer to March.    
For example: The Easter of the year 2001 was celebrated on April 15 (circle)
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Dates of the Easter of the Orthodox
Decades
1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090
0         20 28 9 17 26 6 15
30
4 19 28 6 17 25 4 14 23  0
1         12 20 29 9 18 26 7 15 24 2 13 21 7 10 19 4 8  1
2         1 5 20 29 9 18 26 5 15 24 2 13 21 30 10 19 27  2
3     *   16 25 5 14 29 8 18 27 5 16 24 3 13 22 30 11 19  3
4       27 8 16 25 3 14 22 1 11 20 5 9 24 3 13 22 30 11  4
5       19 28 6 17 25 4 14 23 1 12 20 29 9 18 26 7 15 24  5
6       2 12 21 6 10 25 4 14 23 1 12 20 29 9 18 26 7 15  6
7       24 2 13 21 30 10 19 27 8 16 2 5 21 29 10 18 27 5  7
8       15 24 2 13 21 30 10 19 27 8 16 25 5 14 29 8 18 27  8
9       5 9 24 3 13 22 30 11 19 28 8 17 25 4 14 23 1 12  9
1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090
The dates relate to April, except those which have the indication M and refer to May.