strftime()

A JavaScript port of strftime(), a function to format the date and time.

Supported conversion specifications:

Sequence	Description	Example
%a	Abbreviated name of the day of the week.	Fri
%A	Full name of the day of the week.	Friday
%b	Abbreviated month name.	Apr
%B	Full month name.	April
%c	UTC date and time representation for the current locale.	Sat 02 Apr 2022 00:15:00 GMT
%C	Century number (year/100) as a 2-digit integer.	20
%d	Day of the month as a decimal number (range 01 to 31).	01
%e	Day of the month as a decimal number (range 1 to 31).	1
%F	ISO 8601 date format (equivalent to %Y-%m-%d).	2022-04-01
%g	Like %G, but without century, that is, with a 2-digit year.	22
%G	ISO 8601 week-based year with century as a decimal number. The 4-digit year corresponds to the ISO week number (see %V). This has the same format and value as %Y, except that if the ISO week number belongs to the previous or next year, that year is used instead.	2022
%H	Hour as a decimal number using a 24-hour clock (range 00 to 23). See also %k.	17
%I	Hour as a decimal number using a 12-hour clock (range 01 to 12). See also %l.	05
%j	Day of the year as a decimal number (range 001 to 366).	091
%k	Hour as a decimal number using a 24-hour clock (range 0 to 23). See also %H.	17
%l	Hour as a decimal number using a 12-hour clock (range 1 to 12). See also %I.	5
%m	Month as a decimal number (range 01 to 12).	04
%n	Month as a decimal number (range 1 to 12).	4
%M	Minute as a decimal number (range 00 to 59).	15
%p	Either "AM" or "PM" according to the given time value. Noon is treated as "PM" and midnight as "AM".	PM
%P	Like %p but in lowercase ("am" or "pm").	pm
%s	Number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).	1648858500
%S	Second as a decimal number (range 00 to 59).	00
%u	Day of the week as a decimal (range 1 to 7), Monday being 1. See also %w.	5
%V	ISO 8601 week number of the current year as a decimal number (range 01 to 53), where week 1 is the first week that has at least 4 days in the new year (that is, the first Thursday).	13
%w	Day of the week as a decimal (range 0 to 6), Sunday being 0. See also %u.	5
%x	Preferred date representation for the current locale without the time.	4/1/2022
%X	Preferred time representation for the current locale without the date.	5:15:00 PM
%y	Year as a decimal number without a century (range 00 to 99).	22
%Y	Year as a decimal number including the century.	2022
%z	The +hhmm or -hhmm numeric timezone (that is, the hour and minute offset from UTC).	-0800
%Z	Timezone name.	Pacific Standard Time
%Zs	Timezone short name (abbreviation).	PST

Compatibility notes:

• %c - formatted string is slightly different
• %D - not implemented (use %m/%d/%y or %d/%m/%y)
• %e - space is not added
• %E - not implemented
• %h - not implemented (use %b)
• %k - space is not added
• %n - like %m, but no leading zero (use \n for newline)
• %O - not implemented
• %r - not implemented (use %I:%M:%S %p)
• %R - not implemented (use %H:%M)
• %t - not implemented (use \t)
• %T - not implemented (use %H:%M:%S)
• %U - not implemented
• %W - not implemented
• %+ - not implemented
• %% - not implemented (use %)

Sample usage:

// Returns "15-09-2016 16:20"
strftime('%d-%m-%Y %H:%M');

// You can optionally pass it a Date object
// Returns "01-01-2016 21:30"
strftime('%d-%m-%Y %H:%M', new Date('Jan 1, 2016 9:30 PM'));