Set an alarm for 15:20

⏰ The alarm will ring at 3:20 PM — in 13 h 11 min
Alarm at 3:20 PM
⏰ 3:20 PM
13Hours
:
11Minutes
:
46Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 3:20 PM

Go to bed atSleep cyclesSleep
6:05 AM69 h
7:35 AM57 h 30 min
9:05 AM46 h
10:35 AM34 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 3:20 PM alarm

Snooze length1st2nd3rd
5 minutes3:25 PM3:30 PM3:35 PM
9 minutes3:29 PM3:38 PM3:47 PM
10 minutes3:30 PM3:40 PM3:50 PM

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

About 3:20 PM

In the 3 PM hour many schools finish for the day and afternoon traffic starts to grow.

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

About 3:20 PM

12-hour clock3:20 PM
24-hour clock15:20
Military time1520
In wordsTwenty minutes past three
Part of the dayAfternoon

Questions about a 15:20 alarm

How do I set an alarm for 15:20?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 3:20 PM, which is 13 hours, 11 minutes from now.

What time should I go to bed to wake up at 3:20 PM?

For five full sleep cycles, go to bed around 7:35 AM; for six cycles, around 6:05 AM.