Source: Wikipedia: Date (Unix)
| Specifier | Description | Values/Example |
|---|---|---|
| Day | ||
| %a | weekday, abbreviated | Mon |
| %A | weekday, full | Monday |
| %d | day of the month (dd), zero padded | 04 |
| %e | day of the month (dd) | 4 |
| %j | day of year, zero padded | 001-366 |
| %u | day of week starting with Monday (1), i.e. mtwtfss | 1 |
| %w | day of week starting with Sunday (0), i.e. smtwtfs | 1 |
| Week | ||
| %U | week number Sunday as first day of week | 01–53 |
| %W | week number Monday as first day of week | 01–53 |
| %V | week of the year | 01–53 |
| Month | ||
| %m | mm month | 07 |
| %h | Mon | Jul |
| %b | Mon, locale's abbreviated | Jul |
| %B | locale's full month, variable length | July |
| Year | ||
| %y | yy two digit year | 00–99 |
| %Y | ccyy year | 2011 |
| %g | 2-digit year corresponding to the %V week number | |
| %G | 4-digit year corresponding to the %V week number | |
| Century | ||
| %C | cc century | 00–99 |
| Date | ||
| %D | mm/dd/yy | 07/4/11 |
| %x | locale's date representation (mm/dd/yy) | 07/4/2011 |
| %F | %Y-%m-%d | 2011-07-4 |
| Hours | ||
| %l (Lowercase L) | hour (12 hour clock) | 1 |
| %I (Uppercase I) | hour (12 hour clock) zero padded | 01 |
| %k | hour (24 hour clock) | 13 |
| %H | hour (24 hour clock) zero padded | 13 |
| %p | locale's upper case AM or PM (blank in many locales) | PM |
| %P | locale's lower case am or pm | pm |
| Minutes | ||
| %M | MM minutes | 20 |
| Seconds | ||
| %s | seconds since 00:00:00 1970-01-01 UTC (Unix epoch) | 1309785651 |
| %S | SS second | 00–60 (The 60 is necessary to accommodate a leap second) |
| %N | nanoseconds | 000000000–999999999 |
| Time | ||
| %r | hours, minutes, seconds (12-hour clock) | 01:20:51 PM |
| %R | hours, minutes (24 hour clock) | hh:mm e.g. 13:20 |
| %T | hours, minutes, seconds (24-hour clock) | 13:20:51 |
| %X | locale's time representation (%H:%M:%S) | |
| Date and Time | ||
| %c | locale's date and time | Sat Nov 04 12:02:33 EST 1989 |
| Time zone | ||
| %z | -zzzz RFC-822 style numeric timezone | -0500 |
| %Z | time zone (e.g., EDT) nothing if no time zone is determinable | EST |
