You are not handling Leap Years correctly. I'd check CPAN. There are a dozen or modules that handle dates in including Date::Calc.

UPDATE: I see jryan has pointed this out also. There is also Date-Leapyear

FYI:The rules for Leap Year are:
  • Every year divisible by 4 is a leap year.
  • But every year divisible by 100 is NOT a leap year
  • Unless the the year is also divisible by 400, then it is still a leap year.

    grep 
    grep> cd pub
grep> more beer

    [download]

    In reply to Re: Date Checking module by grep
    in thread Date Checking module by tradez

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