Simple DateFormat format codes:
To specify the time format use a time pattern string. In this pattern, all ASCII letters are reserved as pattern letters, which are defined as the following:
| Character | Description | Example |
|---|
| G | Era designator | AD |
| y | Year in four digits | 2001 |
| M | Month in year | July or 07 |
| d | Day in month | 10 |
| h | Hour in A.M./P.M. (1~12) | 12 |
| H | Hour in day (0~23) | 22 |
| m | Minute in hour | 30 |
| s | Second in minute | 55 |
| S | Millisecond | 234 |
| E | Day in week | Tuesday |
| D | Day in year | 360 |
| F | Day of week in month | 2 (second Wed. in July) |
| w | Week in year | 40 |
| W | Week in month | 1 |
| a | A.M./P.M. marker | PM |
| k | Hour in day (1~24) | 24 |
| K | Hour in A.M./P.M. (0~11) | 10 |
| z | Time zone | Eastern Standard Time |
| ' | Escape for text | Delimiter |
| " | Single quote | ` |
Date and Time Conversion Characters:
| Character | Description | Example |
|---|
| c | Complete date and time | Mon May 04 09:51:52 CDT 2009 |
| F | ISO 8601 date | 2004-02-09 |
| D | U.S. formatted date (month/day/year) | 02/09/2004 |
| T | 24-hour time | 18:05:19 |
| r | 12-hour time | 06:05:19 pm |
| R | 24-hour time, no seconds | 18:05 |
| Y | Four-digit year (with leading zeroes) | 2004 |
| y | Last two digits of the year (with leading zeroes) | 04 |
| C | First two digits of the year (with leading zeroes) | 20 |
| B | Full month name | February |
| b | Abbreviated month name | Feb |
| m | Two-digit month (with leading zeroes) | 02 |
| d | Two-digit day (with leading zeroes) | 03 |
| e | Two-digit day (without leading zeroes) | 9 |
| A | Full weekday name | Monday |
| a | Abbreviated weekday name | Mon |
| j | Three-digit day of year (with leading zeroes) | 069 |
| H | Two-digit hour (with leading zeroes), between 00 and 23 | 18 |
| k | Two-digit hour (without leading zeroes), between 0 and 23 | 18 |
| I | Two-digit hour (with leading zeroes), between 01 and 12 | 06 |
| l | Two-digit hour (without leading zeroes), between 1 and 12 | 6 |
| M | Two-digit minutes (with leading zeroes) | 05 |
| S | Two-digit seconds (with leading zeroes) | 19 |
| L | Three-digit milliseconds (with leading zeroes) | 047 |
| N | Nine-digit nanoseconds (with leading zeroes) | 047000000 |
| P | Uppercase morning or afternoon marker | PM |
| p | Lowercase morning or afternoon marker | pm |
| z | RFC 822 numeric offset from GMT | -0800 |
| Z | Time zone | PST |
| s | Seconds since 1970-01-01 00:00:00 GMT | 1078884319 |
| Q | Milliseconds since 1970-01-01 00:00:00 GMT | 1078884319047 |
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