Set an alarm for 16:38

⏰ The alarm will ring at 4:38 PM — in 14 h 36 min
Alarm at 4:38 PM
⏰ 4:38 PM
14Hours
:
36Minutes
:
55Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 4:38 PM

Go to bed atSleep cyclesSleep
7:23 AM69 h
8:53 AM57 h 30 min
10:23 AM46 h
11:53 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 4:38 PM alarm

Snooze length1st2nd3rd
5 minutes4:43 PM4:48 PM4:53 PM
9 minutes4:47 PM4:56 PM5:05 PM
10 minutes4:48 PM4:58 PM5:08 PM

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

About 4:38 PM

The 4 PM hour is late afternoon. U.S. stock markets close at 4:00 PM Eastern Time.

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

About 4:38 PM

12-hour clock4:38 PM
24-hour clock16:38
Military time1638
In wordsTwenty-two minutes to five
Part of the dayAfternoon

Questions about a 16:38 alarm

How do I set an alarm for 16:38?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 4:38 PM, which is 14 hours, 36 minutes from now.

What time should I go to bed to wake up at 4:38 PM?

For five full sleep cycles, go to bed around 8:53 AM; for six cycles, around 7:23 AM.