strftime reference and sandbox

format dates and times in Ruby, Python, C & PHP with strftime

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strftime quick reference

Dates

%a	The abbreviated weekday name ("Sun")
%A	The full weekday name ("Sunday")
%b	The abbreviated month name ("Jan")
%B	The full month name ("January")
%d	Day of the month (01..31)
%e	Day of the month without a leading zero (1..31)
%j	Day of the year (001..366)
%m	Month of the year (01..12)
%U	Week number of the current year, starting with the first Sunday as the first day of the first week (00..53)
%W	Week number of the current year, starting with the first Monday as the first day of the first week (00..53)
%w	Day of the week (Sunday is 0, 0..6)
%x	Preferred representation for the date alone, no time
%y	Year without a century (00..99)
%Y	Year with century

Times

%H	Hour of the day, 24-hour clock (00..23)
%I	Hour of the day, 12-hour clock (01..12)
%l	Hour of the day, 12-hour clock without a leading zero (1..12)
%M	Minute of the hour (00..59)
%P	Meridian indicator ("am" or "pm")
%p	Meridian indicator ("AM" or "PM")
%S	Second of the minute (00..60)
%X	Preferred representation for the time alone, no date
%Z	Time zone name

Misc.

%c	The preferred local date and time representation
%%	Literal "%" character