⭐ in reply to How do I find the difference in days between two dates, in a cool perl way?

Check out Time::Piece. This overides localtime(), gmtime(), arithmetic operations, and stringification so that date calculations are remarkably simple. For example: 

use Time::Piece;

$before = Time::Piece->strptime("2001/01/01", "%Y/%m/%d");
$now = localtime;

$diff = $now - $before;
print int($diff->days), " days since $before\n";

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