Set Alarm for 8:30 AM
The alarm below is already set to 8:30 AM (8:30 a.m.). Press Set Alarm to arm it, and keep this tab open so it can ring.
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About this alarm
Often set by students and by people coming off a late shift. On a laptop, it doubles as a "time to leave" reminder while you keep working in other tabs.
A later morning alarm: useful for a lie-in with a hard stop, a mid-morning meeting, or a reminder to break off from whatever you started at breakfast.
Need a different time? Change the hour, minute or AM/PM above - you can set any minute of the day, and this page stays put. The online alarm clock works exactly the same way.
What time to go to bed for a 8:30 AM alarm
| Go to bed at | Sleep | 90-min units (approx.) |
|---|---|---|
| 11:15 PM | 9 hours | 6 |
| 12:45 AM | 7 hours 30 minutes | 5 |
| 2:15 AM | 6 hours | 4 |
Each bedtime is worked backward from the alarm time: 15 minutes to fall asleep, then whole 90-minute blocks. Actual sleep cycles and how much sleep you need vary from person to person, and waking up every 90 minutes doesn't guarantee an easier wake-up - treat these times as a starting point, not a guarantee.
8:30 AM in other formats
- 24-hour clock: 8:30 AM = 08:30
- Spoken: half past eight in the morning
- Bed at 10:00 PM: 10 hours 30 minutes until the alarm
- Bed at 11:00 PM: 9 hours 30 minutes until the alarm
- Bed at midnight: 8 hours 30 minutes until the alarm
Nearby alarm times
Questions about how it works? See the FAQ