Python date formatting and parsing

Basics

Details can be found in the official documentation

datetime.strftime(format): date to string conversion [string format time]
strptime(string, format): string to date conversion [string parse time]

Directive	Description	Example
%c	Date and time (l)	Tue Aug 16 21:30:00 1988
%x	Date (l)	08/16/1988
%X	Time (l)	21:30:00
%%	Literal '%'	%

(l): Locale dependent

Date

Directive	Description	Example
%a	Weekday (l)	Sun, Mon, ..., Sat
%A	Weekday (l)	Sunday, Monday, ..., Saturday
%w	Weekday (Sunday = 0)	0, 1, ..., 6
%b	Month (l)	Jan, Feb, ..., Dec
%B	Month (l)	January, February, ..., December
%m	Month	01, 02, ..., 12
%y	Year	00, 01, ..., 99
%Y	Year	1970, 1988, 2001, 2013
%d	Day of the month	01, 02, ..., 31
%j	Day of the year	001, 002, ..., 366
%U	Week of the year (Starts Sunday)	00, 01, ..., 53
%W	Week of the year (Starts Monday)	00, 01, ..., 53

(l): Locale dependent

Time

Directive	Description	Example
%H	Hour	00, 01, ..., 23
%I	Hour	01, 02, ..., 12
%p	AM/PM (l)	AM, PM
%M	Minute	00, 01, ..., 59
%S	Second	00, 01, ..., 59
%f	Microsecond	000000, 000001, ..., 999999
%Z	UTC offset	(empty), UTC, EST, CST
%z	Time zone	(empty), +0000, -0400, +1030

(l): Locale dependent