Set an alarm for 0:45

⏰ The alarm will ring at 12:45 AM — in 22 h 37 min
Alarm at 12:45 AM
⏰ 12:45 AM
22Hours
:
37Minutes
:
15Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 12:45 AM

Go to bed atSleep cyclesSleep
3:30 PM69 h
5:00 PM57 h 30 min
6:30 PM46 h
8:00 PM34 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 12:45 AM alarm

Snooze length1st2nd3rd
5 minutes12:50 AM12:55 AM1:00 AM
9 minutes12:54 AM1:03 AM1:12 AM
10 minutes12:55 AM1:05 AM1:15 AM

Nine minutes is the traditional snooze length on many alarm clocks.

About 12:45 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 12:45 AM

12-hour clock12:45 AM
24-hour clock00:45
Military time0045
In wordsQuarter to one
Part of the dayNight

Questions about a 0:45 alarm

How do I set an alarm for 0:45?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 12:45 AM, which is 22 hours, 37 minutes from now.

What time should I go to bed to wake up at 12:45 AM?

For five full sleep cycles, go to bed around 5:00 PM; for six cycles, around 3:30 PM.