- Shorter times
- 100 000 seconds = 27.8 hours
- 28.58 hours -- half life of erbium-160
- 5 days -- one work week
- 7 days -- one week
- 9.25 days -- half life of thulium-167
- 10 days -- length of a new week (décade) in the French Revolutionary Calendar
- 1 million seconds = 11.6 days
- Longer times