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Datetime formats

Directive Meaning Example
%a Abbreviated weekday name. Sun, Mon, …
%A Full weekday name. Sunday, Monday, …
%w Weekday as a decimal number. 0, 1, …, 6
%d Day of the month as a zero-padded decimal. 01, 02, …, 31
%-d Day of the month as a decimal number. 1, 2, …, 30
%b Abbreviated month name. Jan, Feb, …, Dec
%B Full month name. January, February, …
%m Month as a zero-padded decimal number. 01, 02, …, 12
%-m Month as a decimal number. 1, 2, …, 12
%y Year without century as a zero-padded decimal number. 00, 01, …, 99
%-y Year without century as a decimal number. 0, 1, …, 99
%Y Year with century as a decimal number. 2013, 2019 etc.
%H Hour (24-hour clock) as a zero-padded decimal number. 00, 01, …, 23
%-H Hour (24-hour clock) as a decimal number. 0, 1, …, 23
%I Hour (12-hour clock) as a zero-padded decimal number. 01, 02, …, 12
%-I Hour (12-hour clock) as a decimal number. 1, 2, … 12
%p Locale’s AM or PM. AM, PM
%M Minute as a zero-padded decimal number. 00, 01, …, 59
%-M Minute as a decimal number. 0, 1, …, 59
%S Second as a zero-padded decimal number. 00, 01, …, 59
%-S Second as a decimal number. 0, 1, …, 59
%f Microsecond as a decimal number, zero-padded on the left. 000000 - 999999
%z UTC offset in the form +HHMM or -HHMM.  
%Z Time zone name.  
%j Day of the year as a zero-padded decimal number. 001, 002, …, 366
%-j Day of the year as a decimal number. 1, 2, …, 366
%U Week number of the year (Sunday as the first day of the week). All days in a new year preceding the first Sunday are considered to be in week 0. 00, 01, …, 53
%W Week number of the year (Monday as the first day of the week). All days in a new year preceding the first Monday are considered to be in week 0. 00, 01, …, 53
%c Locale’s appropriate date and time representation. Mon Sep 30 07:06:05 2013
%x Locale’s appropriate date representation. 09/30/13
%X Locale’s appropriate time representation. 07:06:05
%% A literal ‘%’ character. %