Sleep when?
Waking up between sleep cycles is good.
Sleep cycles last about 90 minutes.
This tool finds the best time to sleep/wake.
I want to wake up at...
Go to bed at one of these times:
- ★10:45 PM 9h 0m
- ★12:15 AM 7h 30m
- ★01:45 AM 6h 0m
- 03:15 AM 4h 30m
- 04:45 AM 3h 0m
- 06:15 AM 1h 30m