Set an alarm for 12:58 AM

⏰ The alarm will ring at 12:58 AM — in 23 h 43 min
Alarm at 12:58 AM
⏰ 12:58 AM
23Hours
:
43Minutes
:
53Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 12:58 AM

Go to bed atSleep cyclesSleep
3:43 PM69 h
5:13 PM57 h 30 min
6:43 PM46 h
8:13 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 12:58 AM alarm

Snooze length1st2nd3rd
5 minutes1:03 AM1:08 AM1:13 AM
9 minutes1:07 AM1:16 AM1:25 AM
10 minutes1:08 AM1:18 AM1:28 AM

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

About 12:58 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 12:58 AM

12-hour clock12:58 AM
24-hour clock00:58
Military time0058
In wordsTwo minutes to one
Part of the dayNight

Questions about a 12:58 AM alarm

How do I set an alarm for 12:58 AM?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 12:58 AM, which is 23 hours, 43 minutes from now.

What time should I go to bed to wake up at 12:58 AM?

For five full sleep cycles, go to bed around 5:13 PM; for six cycles, around 3:43 PM.