>From no less than the US Naval Observatory, an algorithm to calculate 
the date of Easter in any given year. For those interested in the 
intriguing and complex background for this equation set, and for an 
explanation of how it does and doesn't work for various people, see 
http://aa.usno.navy.mil/faq/docs/easter.html  . Quite apart from the 
spiritual aspects, it's well worth reading by anyone interested in 
algorithms, history or just things technical.

In the following calculation ALL arithmetic must be INTEGER.

Given year "y" this calculates

            m = month
and
            d = day

__________

    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 )


As I was away at an Easter Camp over the Easter period I thought this 
belated technical contribution might make up slightly for any missed 
prior input :-)



            Russell McMahon
__________________________________________________________________________

  The Lord is Risen!           -            He is Risen indeed!
    But the date of celebration is strangely variable :-)


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