Set alarm for 1:21 tomorrow morning
⏰ The alarm will ring at 1:21 AM — in 23 h 07 min
Set an alarm for another time
Best bedtimes to wake up at 1:21 AM
| Go to bed at | Sleep cycles | Sleep |
|---|---|---|
| 4:06 PM | 6 | 9 h |
| 5:36 PM | 5 | 7 h 30 min |
| 7:06 PM | 4 | 6 h |
| 8:36 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.
How much sleep will I get before 1:21 AM?
| Bedtime | Time in bed | 7+ hours of sleep? |
|---|---|---|
| 8 PM | 5 h 21 min | Short |
| 9 PM | 4 h 21 min | Short |
| 10 PM | 3 h 21 min | Short |
| 11 PM | 2 h 21 min | Short |
| 12 AM | 1 h 21 min | Short |
| 1 AM | 21 min | Short |
| 2 AM | 23 h 21 min | Yes |
The CDC recommends adults sleep 7 or more hours a night. Allow about 15 minutes to fall asleep.
Snooze times after a 1:21 AM alarm
| Snooze length | 1st | 2nd | 3rd |
|---|---|---|---|
| 5 minutes | 1:26 AM | 1:31 AM | 1:36 AM |
| 9 minutes | 1:30 AM | 1:39 AM | 1:48 AM |
| 10 minutes | 1:31 AM | 1:41 AM | 1:51 AM |
Nine minutes is the traditional snooze length on many alarm clocks.
About 1:21 AM
The 1 AM hour is deep in the night. Night-shift workers, bakers and flight crews are among the few people routinely awake.
Press “Start Alarm” and keep this tab open; press “Test Alarm” first to check the volume.
About 1:21 AM
| 12-hour clock | 1:21 AM |
|---|---|
| 24-hour clock | 01:21 |
| Military time | 0121 |
| In words | Twenty-one minutes past one |
| Part of the day | Night |
Questions about a 1:21 AM alarm
How do I set an alarm for 1:21 AM?
Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 1:21 AM, which is 23 hours, 7 minutes from now.
What time should I go to bed to wake up at 1:21 AM?
For five full sleep cycles, go to bed around 5:36 PM; for six cycles, around 4:06 PM.