| Code Value | Definition |
|---|---|
| ANN | year |
| B52 | kilosecond |
| B98 | microsecond |
| C26 | millisecond |
| C47 | nanosecond |
| D42 | tropical year |
| DAY | day |
| H70 | picosecond |
| HUR | hour |
| L95 | common year |
| L96 | sidereal year |
| M56 | shake |
| MIN | minute [unit of time] |
| MON | month |
| SEC | second [unit of time] |
| WEE | week |