There are many date/time packages on CPAN, most of them perfectly capable of adding/subtracting dates. For simple date calculations, I prefer Date::Simple: 
$  perl -MDate::Simple=:all -wE 'say today() - 3'
2010-06-12
$

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In reply to Re: 3 days previous Date by JavaFan
in thread 3 days previous Date by Anonymous Monk

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