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How to work out the date of Easter Sunday for any year * A mod b means the remainder when A is divided by b i.e. 23 mod 4 = 3 * M div n means the value of M ÷ n forgetting the remainder i.e. 23 div 4 = 5 ** Let g = (Y mod 19) + 1 where Y is the year ** Let C = (Y div 100) + 1 ** Let X = (3C div 4) - 12 ** Let Z = ((8C + 5) div 25) - 5 ** Let D = (5Y div 4) - X - 10 ** Let E = (11G + 20 + Z - X) mod 30 ** If E = 25 and G greater than 11, or if E = 24, then increase E by 1 ** Let N = 44 E ** If N is less than 21, increase N by 30 ** Let P = N + 7 - ((D + N) mod 7) ** If P is greater than 31, Easter Sunday is on (P - 31) April, Otherwise it is on P March It may be easier to buy a diary!!!