Alarm Clock
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Set an Alarm for 4:00 PM
Press "Set Alarm for 4:00 PM" and this online alarm clock rings at 4:00 PM. Keep this tab open and the sound on: the alarm plays until you press OK or Snooze.
What Time Should I Go to Bed to Wake Up at 4:00 PM?
Sleep runs in cycles of about 90 minutes, and most people need around 15 minutes to fall asleep. Waking up at the end of a cycle helps you feel less groggy. To wake up at 4:00 PM, go to bed at one of these times:
| Bedtime | Sleep | Sleep Cycles |
|---|---|---|
| 6:45 AM | 9 hours | 6 |
| 8:15 AM | 7.5 hours | 5 |
| 9:45 AM | 6 hours | 4 |
Most adults need 7 to 9 hours of sleep, so the first two bedtimes suit most people. Teenagers need more: 8 to 10 hours.
How to Use the Online Alarm Clock
- Press "Set Alarm for 4:00 PM". The alarm appears in your list of alarms below.
- To make it ring on certain days only, tap Once under the alarm and choose the days, for example Monday to Friday.
- Choose the alarm sound, the volume and the snooze length in the settings.
- Keep this tab open and your device awake. On a phone, keep the screen on and the volume up.
Frequently Asked Questions
What is 4:00 PM in 24-hour time?
4:00 PM is 16:00 in 24-hour time. That is in the afternoon.
Will the alarm ring if I close the tab?
No. The alarm runs in your browser, so this tab has to stay open. You can use other tabs and apps in the meantime.
Can I snooze the alarm?
Yes. Press Snooze when it rings and it rings again after 9 minutes. You can change the snooze length in the settings.