Command Replaced By
%a Abbreviated weekday name
%A Full weekday name
%b Abbreviated month name
%B Full month name
%c Standard date and time string
%d Day of month as a decimal (1-31)
%H Hour (0-23)
%I Hour (1-12)
%j Day of year as a decimal (1-366)
%m Month as decimal (1-12)
%M Minute as decimal (0-59)
%p Locale's equivalent of AM or PM
%S Second as decimal (0-61)
%U Week of year, Sunday being first day (0-53)
%w Weekday as a decimal (0-6, Sunday being 0)
%W Week of year, Monday being first day (0-53)
%x Standard date string
%X Standard time string
%y Year in decimal without century (0-99)
%Y Year including century as decimal
%Z Time zone name
%% The percent sign