Set an alarm for 0:39
⏰ The alarm will ring at 12:39 AM — in 22 h 28 min
Set an alarm for another time
Best bedtimes to wake up at 12:39 AM
| Go to bed at | Sleep cycles | Sleep |
|---|---|---|
| 3:24 PM | 6 | 9 h |
| 4:54 PM | 5 | 7 h 30 min |
| 6:24 PM | 4 | 6 h |
| 7:54 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 12:39 AM alarm
| Snooze length | 1st | 2nd | 3rd |
|---|---|---|---|
| 5 minutes | 12:44 AM | 12:49 AM | 12:54 AM |
| 9 minutes | 12:48 AM | 12:57 AM | 1:06 AM |
| 10 minutes | 12:49 AM | 12:59 AM | 1:09 AM |
Nine minutes is the traditional snooze length on many alarm clocks.
About 12:39 AM
Midnight starts a new calendar day. Date-based deadlines, daily counters and many scheduled computer jobs reset during this hour, and most people are asleep.
Press “Start Alarm” and keep this tab open; press “Test Alarm” first to check the volume.
About 12:39 AM
| 12-hour clock | 12:39 AM |
|---|---|
| 24-hour clock | 00:39 |
| Military time | 0039 |
| In words | Twenty-one minutes to one |
| Part of the day | Night |
Questions about a 0:39 alarm
How do I set an alarm for 0:39?
Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 12:39 AM, which is 22 hours, 28 minutes from now.
What time should I go to bed to wake up at 12:39 AM?
For five full sleep cycles, go to bed around 4:54 PM; for six cycles, around 3:24 PM.