At the risk of giving you a RTFM answer, see Date::Calc, and more specifically Delta_DHMS: 
use Date::Calc qw/Delta_DHMS/;

...

my @date_one = qw/2002 04 25 23 12 40/;
my @date_two = qw/2002 03 23 15 25 21/;

my ($dd, $dh, $dm, $ds) = Delta_DHMS(@date_one, @date_two);

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In reply to (ar0n: Date::Calc ) Re: Date difference? by ar0n
in thread Date difference? by BUU

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