Sorry, Masem. I trimmed it down to 47. Hey! 47!

sub f {
#234567890#234567890#234567890#234567890#234567890#
$b=1;$b+=1+!$_%4-!$_%100+!$_%400for 1..pop;$b%7
}
[download]

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;