Set Alarm for 12:15 PM
A free online alarm clock preset to 12:15 PM. Press Start, leave this tab open, and it will ring at 12:15 PM sharp.
Keep this tab open. For alarms that work with your phone locked, get AVA.
Waking up at 12:15 PM
A 12:15 PM alarm usually means one of two things: you are protecting a nap, or you sleep on a shifted schedule — night work, a late flight, or a timezone your body has not caught up with yet.
If this is a nap, set it for 20–30 minutes from now and stop there; longer naps drop you into deep sleep and you wake foggy instead of restored. If this is your main sleep, the classic math still applies: asleep by 4:45 AM buys five full 90-minute cycles before 12:15 PM.
Daytime sleep needs extra defense — blackout curtains or a sleep mask, earplugs or steady white noise, and a phone on do-not-disturb. The world is loud at this hour; your bedroom does not have to be.
FAQ
- How do I set an alarm for 12:15 PM?
- Press Start above — the page counts down to the next 12:15 PM and plays a loud beep through your browser. Keep this tab open and your volume up. No download or signup needed.
- What time should I go to bed to wake up at 12:15 PM?
- To get 7.5 hours of sleep (five full 90-minute cycles), be asleep by 4:45 AM. For a full nine hours, aim for 3:15 AM. Add about 15 minutes for actually falling asleep.
- Will the alarm ring if my screen is off or the tab is closed?
- No — a browser alarm needs this tab open and the device awake. For alarms that ring reliably even over the lock screen, use the AVA app.