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Set Alarm for 3:00 PM

The form is pre-filled for 3:00 PM — hit Set Alarm to start the live countdown. Pick a sound, add a label, and the alarm will ring at 3:00 PM local time.

Now --:--

No alarm set

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Set an alarm to start

Ring in

How long until 3:00 PM?

3:00 PM is 15:00 in 24-hour time (1500 in military notation) — the afternoon. The alarm counts down to the next 3:00 PM in your local time zone, rolling over to tomorrow if it has already passed today.

Going to sleep at 3:00 PM?

If 3:00 PM is when you plan to go to bed, these wake-up times fall at the end of a ~90-minute sleep cycle, allowing about 15 minutes to fall asleep:

7:45 PM 3 cycles · 4 h 30 min of sleep 9:15 PM 4 cycles · 6 h of sleep 10:45 PM 5 cycles · 7 h 30 min of sleep 12:15 AM 6 cycles · 9 h of sleep

For a short daytime rest, a 20-minute power nap avoids deep sleep entirely — try the timer instead.

Nearby alarm times

2:30 PM Set alarm → 2:40 PM Set alarm → 2:50 PM Set alarm → 3:10 PM Set alarm → 3:20 PM Set alarm → 3:30 PM Set alarm →

Keep this tab open and your device awake for the alarm to ring — how browser alarms work. Need a duration instead of a clock time? Use the timer, or a 20-minute power-nap timer.