Alarm for 4:00 AM
Online alarm clock set for 4:00 AM.
07:30:51 PM
No active alarms
Keep this tab open: the alarm rings while the page is loaded.
This alarm will ring at 4:00 AM with the sound you choose. Going to bed at 10:00 PM gives you 6 hours of sleep; Going to bed at 11:00 PM gives you 5 hours of sleep; Going to bed at 12:00 AM gives you 4 hours of sleep.
Tomorrow in New York the sun rises at 07:16 AM, 196 minutes after the alarm.
Bedtimes to wake up at 4:00 AM
Waking at the end of a ~90-minute sleep cycle helps you feel rested. These bedtimes include 15 minutes to fall asleep:
| Go to bed at | Cycles | Hours of sleep |
|---|---|---|
| 6:45 PM | 6 | 9 |
| 8:15 PM | 5 | 7.5 |
| 9:45 PM | 4 | 6 |
Frequently asked questions
The alarm on this page is already set for 4:00 AM. Switch it on, choose a sound and keep the tab open: it rings at 4:00 AM by your device's clock.
To complete 90-minute sleep cycles, go to bed at 6:45 PM (9 h of sleep), 8:15 PM (7.5 h) or 9:45 PM (6 h), allowing 15 minutes to fall asleep.
The browser must stay open. On mobile, enable "Keep the screen on" or keep the tab visible while charging.