From the Perl Cookbook 

use Date::Calc qw(Day_of_Week Week_Number Day_of_Year);
# you have $year, $month, and $day
# $day is day of month by definition
$wday = Day_of_Week($year, $month, $day);
$wnum = Week_Number($year, $month, $day);
$dnum = Day_of_Year($year, $month, $day);

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Update I read that backwords expected numeric to name. So how would we reverse it hmmmm.... I would go with shockme because depending on how deep you have to go back your function mishandles leap years.

"No matter where you go, there you are." BB

In reply to Re: Help with dates by Ninthwave
in thread Help with dates by mhearse

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