The LOng calculations for easter may be shortened to this algorithm that collected from Tommorows World in the Late 70's. It works from 1900 to 2099 only in contrast to the longer versions which are for any year(if the Calendar is not changed again !!!!)
E = year-1900 A = Remainder of E / 19 S = ( 7*A+1 ) / 19 ignore the remainder T = Remainder of ( 11*A + 4 - S) / 29 e = E / 4 ignore the remainder R = Remainder of ( E + e + 31 -T) / 7 Easter Day =25 -T - R The result is in days before or after 31 March ie 0 = 31 March +ve in April -ve in March For 2000 E=100 A=5 S=1 T=0 e=25 R=2 Easter Day =23 ie 23 April For 1989 E=89 A=13 S=4 T=27 e=22 R=3 Easter Day = -5 ie 25 March Hope this short method is of help Colin Davis
