Set an alarm for 18:38

⏰ The alarm will ring at 6:38 PM — in 16 h 36 min
Alarm at 6:38 PM
⏰ 6:38 PM
16Hours
:
36Minutes
:
55Seconds
Saturday, October 24, 2026

Set an alarm for another time

Best bedtimes to wake up at 6:38 PM

Go to bed atSleep cyclesSleep
9:23 AM69 h
10:53 AM57 h 30 min
12:23 PM46 h
1:53 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 6:38 PM alarm

Snooze length1st2nd3rd
5 minutes6:43 PM6:48 PM6:53 PM
9 minutes6:47 PM6:56 PM7:05 PM
10 minutes6:48 PM6:58 PM7:08 PM

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

About 6:38 PM

The 6 PM hour is a common dinner time in many countries and the start of evening news broadcasts.

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

About 6:38 PM

12-hour clock6:38 PM
24-hour clock18:38
Military time1838
In wordsTwenty-two minutes to seven
Part of the dayEvening

Questions about a 18:38 alarm

How do I set an alarm for 18:38?

Open this page, press “Start Alarm” and leave the tab open. The alarm rings at 6:38 PM, which is 16 hours, 36 minutes from now.

What time should I go to bed to wake up at 6:38 PM?

For five full sleep cycles, go to bed around 10:53 AM; for six cycles, around 9:23 AM.