Seconds is defined as the duration of 9,192,631,770 cycles of microwave light absorbed or emitted by the hyperfine transition of cesium-133 atoms in their ground state undisturbed by external fields.
| Seconds | Is | In | Comments |
|---|---|---|---|
| 300 | 5 | Minutes | |
| 600 | 10 | Minutes | |
| 900 | 15 | Minutes | |
| 1800 | 30 | Minutes | |
| 2700 | 45 | Minutes | |
| 3600 | 1 | Hours | |
| 7200 | 2 | Hours | |
| 10800 | 3 | Hours | |
| 14400 | 4 | Hours | |
| 18000 | 5 | Hours | |
| 36000 | 10 | Hours | |
| 39600 | 11 | Hours | |
| 43200 | 12 | Hours | |
| 46800 | 13 | Hours | |
| 50400 | 14 | Hours | |
| 54000 | 15 | Hours | |
| 86400 | 24 | Hours | (That’s a whole day)! |
| 604800 | 1 | week | |
| 2419200 | 4 | Weeks | or a Month or |
| 2505600 | 1 | Month | February normal and leap years) or |
| 2592000 | 1 | Month | April, June, September, November) or |
| 2678400 | 1 | Month | (January, March, May, July, August, October and December) |
| 29030400 | 12 | Month | About a Year |