Set an alarm for 5:21 PM

⏰ The alarm will ring at 5:21 PM — in 17 h 06 min
Alarm at 5:21 PM
⏰ 5:21 PM
17Hours
:
6Minutes
:
58Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 5:21 PM

Go to bed atSleep cyclesSleep
8:06 AM69 h
9:36 AM57 h 30 min
11:06 AM46 h
12:36 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 5:21 PM alarm

Snooze length1st2nd3rd
5 minutes5:26 PM5:31 PM5:36 PM
9 minutes5:30 PM5:39 PM5:48 PM
10 minutes5:31 PM5:41 PM5:51 PM

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

About 5:21 PM

5 PM marks the end of a traditional nine-to-five workday and the start of evening rush hour.

Press “Start Alarm” and keep this tab open; press “Test Alarm” first to check the volume.

About 5:21 PM

12-hour clock5:21 PM
24-hour clock17:21
Military time1721
In wordsTwenty-one minutes past five
Part of the dayEvening

Questions about a 5:21 PM alarm

How do I set an alarm for 5:21 PM?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 5:21 PM, which is 17 hours, 6 minutes from now.

What time should I go to bed to wake up at 5:21 PM?

For five full sleep cycles, go to bed around 9:36 AM; for six cycles, around 8:06 AM.