| Format Character | Description | Example Output |
| a | 'a.m.' or 'p.m.' . (Note that this is slightly different from phps output, because this includes periods to match Associated PRess style.) | 'a.m.' |
| A | 'AM' or 'PM' . | 'AM' |
| b | Month, textual, three letters, lowercase | 'jan' |
| d | Day of the month, two digits with leading zeros. | '01' to '31' |
| D | Day of the week, textual, three letters. | 'Fri' |
| f | Time, in 12-hour hours and minutes, with minutes left off if theyre zero. | '1' , '1:30' |
| F | Month, textual, long. | 'January' |
| g | Hour, 12-hour format without leading zeros. | '1' to '12' |
| G | Hour, 24-hour format without leading zeros. | '0' to '23' |
| h | Hour, 12-hour format. | '01' to '12' |
| H | Hour, 24-hour format. | '00' to '23' |
| i | Minutes. | '00' to '59' |
| j | Day of the month without leading zeros. | '1' to '31' |
| l | Day of the week, textual, long. | 'Friday' |
| L | Boolean for whether its a leap year. | True or False |
| m | Month, two digits with leading zeros. | '01' to '12' |
| M | Month, textual, three letters. | 'Jan' |
| n | Month without leading zeros. | '1' to '12' |
| N | Month abbreviation in Associated Press style. | 'Jan.' , 'Feb.' , 'March' , 'May' |
| O | Difference to Greenwich Mean Time in hours. | '+0200' |
| P | Time, in 12-hour hours, minutes, and a.m./p.m., with minutes left off if theyre zero and the special-case strings 'midnight' and 'noon' if appropriate. | '1 a.m.' , '1:30 p.m.' , 'midnight', 'noon' , '12:30 p.m.' |
| r | RFC 822 formatted date. | 'Thu, 21 Dec 2000 16:01:07 +0200' |
| s | Seconds, two digits with leading zeros. | '00' to '59' |
| S | English ordinal suffix for day of the month, two characters. | 'st' , 'nd' , 'rd' or 'th' |
| t | Number of days in the given month. | 28 to 31 |
| T | Time zone of this machine. | 'EST' , 'MDT' |
| w | Day of the week, digits without leading zeros. | '0' (Sunday) to '6' (Saturday) |
| W | ISO-8601 week number of year, with weeks starting on Monday. | 1 , 23 |
| y | Year, two digits. | '99' |
| Y | Year, four digits. | '1999' |
| z | Day of the year. | 0 to 365 |
| Z | Time zone offset in seconds. The offset for time zones west of UTC is always negative, and for those east of UTC it is always positive. |
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