Perl Date & Time Format  # 2 Oct 2009

Copying the contents of the above link here so I have an easier time finding it in the future.

%%      PERCENT
%a      day of the week abbr
%A      day of the week
%b      month abbr
%B      month
%c      ctime format: Sat Nov 19 21:05:57 1994
%d      numeric day of the month
%e      DD
%D      MM/DD/YY
%h      month abbr
%H      hour, 24 hour clock, leading 0's)
%I      hour, 12 hour clock, leading 0's)
%j      day of the year
%k      hour
%l      hour, 12 hour clock
%m      month number, starting with 1
%M      minute, leading 0's
%n      NEWLINE
%o      ornate day of month -- "1st", "2nd", "25th", etc.
%p      AM or PM 
%r      time format: 09:05:57 PM
%R      time format: 21:05
%s      seconds since the Epoch, UCT
%S      seconds, leading 0's
%t      TAB
%T      time format: 21:05:57
%U      week number, Sunday as first day of week
%w      day of the week, numerically, Sunday == 0
%W      week number, Monday as first day of week
%x      date format: 11/19/94
%X      time format: 21:05:57
%y      year (2 digits)
%Y      year (4 digits)
%Z      timezone in ascii. eg: PST
%z      timezone in format -/+0000

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