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Here's a subroutine that you can send those two time stamps to for the desired output (returns 0 if no intersecting time):

use Modern::Perl; use Date::Calc qw/ Date_to_Time Time_to_Date /; say intersectingTime( '2012-08-17 12:00:00', '2012-08-17 13:00:00', '2012-08-17 09:00:00', '2012-08-17 12:30:00' ); sub intersectingTime { my ( $s1, $e1, $s2, $e2 ) = map Date_to_Time( /\d+/g ), @_; my $tStart = $s1 > $s2 ? $s1 : $s2; my $tEnd = $e1 < $e2 ? $e1 : $e2; $tEnd <= $tStart ? 0 : sprintf '%4d-%02d-%02d %02d:%02d:%02d for %02d minutes', Time_to_Date( $tStart ), ( $tEnd - $tStart ) / 60; }


2012-08-17 12:00:00 for 30 minutes

In reply to Re: timestamp manipulation and evaluation by Kenosis
in thread timestamp manipulation and evaluation by jonathancnewcomb

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