Set an alarm for 21:31
⏰ The alarm will ring at 9:31 PM — in 19 h 22 min
Set an alarm for another time
Best bedtimes to wake up at 9:31 PM
| Go to bed at | Sleep cycles | Sleep |
|---|---|---|
| 12:16 PM | 6 | 9 h |
| 1:46 PM | 5 | 7 h 30 min |
| 3:16 PM | 4 | 6 h |
| 4:46 PM | 3 | 4 h 30 min |
Assumes about 15 minutes to fall asleep and sleep cycles of roughly 90 minutes. Cycle length varies from person to person, so treat these as estimates.
Snooze times after a 9:31 PM alarm
| Snooze length | 1st | 2nd | 3rd |
|---|---|---|---|
| 5 minutes | 9:36 PM | 9:41 PM | 9:46 PM |
| 9 minutes | 9:40 PM | 9:49 PM | 9:58 PM |
| 10 minutes | 9:41 PM | 9:51 PM | 10:01 PM |
Nine minutes is the traditional snooze length on many alarm clocks.
About 9:31 PM
9 PM is mid-evening, when many households start winding down and young children go to bed.
Press “Start Alarm” and keep this tab open; press “Test Alarm” first to check the volume.
About 9:31 PM
| 12-hour clock | 9:31 PM |
|---|---|
| 24-hour clock | 21:31 |
| Military time | 2131 |
| In words | Twenty-nine minutes to ten |
| Part of the day | Night |
Questions about a 21:31 alarm
How do I set an alarm for 21:31?
Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 9:31 PM, which is 19 hours, 22 minutes from now.
What time should I go to bed to wake up at 9:31 PM?
For five full sleep cycles, go to bed around 1:46 PM; for six cycles, around 12:16 PM.