[May have escaped incomplete - my apologies if this is a duplicate]

>From no less than the US Naval Observatory, an algorithm to calculate
the date of Easter in any given year.

For those mainly interested in the spiritual aspects, skip the
algorithm and follow the link - it's interesting to see why the date
bounces around as it does - even if it may not seem to make sense.
Note that in 2008 Easter will be on March 23rd - 4 days earlier than
this year and earlier than it has been for 20+ years.

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.
(I'm a little suspicious about the rigour of his methodology but
anyone actually interested in making this work should have no
trouble).

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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