This should be renamed the Date::Awesome module. Much, much better than that localtime stuff in core Perl. Date::Parse will parse absolutely anything close to a date string, yet it's smart enough to know to not try to parse, say, times in sentences.
Lacks the sweeping scope, and breath taking vision of the DateTime project, but this classic Perl module is still an exemplar of the Perl old guard, and a tool I reach for whenever I need to do some quick date hacking. perl -MDate::Parse -MDate::Format -e 'print time2str("%C", str2time($mydate))', is a oneliner I reach for over and over.