Format Meaning
%a The abbreviated weekday name ("Sun")
%A The full weekday name ("Sunday")
%b The abbreviated month name ("Jan")
%B The full month name ("January")
%c The preferred local date and time representation
%d Day of the month (01..31)
%H Hour of the day, 24 hour clock (00..23)
%I Hour of the day, 12 hour clock (01..12)
%j Day of the year (001..366)
%m Month of the year (01..12)
%M Minute of the hour (00..59)
%p Meridian indicator ("AM" or "PM")
%S Second of the minute (00..60)
%U Week number of the current year, starting with thefirst Sunday as the first day of thefirst week (00..53)
%W Week number of the current year, starting with thefirst Monday as the first day of thefirst week (00..53)
%w Day of the week (Sunday is 0,0..6)
%x Preferred representation for the date alone, no time
%X Preferred representation for the time alone, no date
%y Year without a century (00..99)
%Y Year with century
%Z Time zone name
%% Literal % character
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