Set the alarm clock for 4:48 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 4:48 am alarm

  • Asleep by 7:33 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 9:03 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 10:33 pm — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

4:48 am across the country

London4:48 am
Birmingham4:48 am
Manchester4:48 am
Glasgow4:48 am
Belfast4:48 am

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

Waking at 4:48 am gives you a quiet moment before heading in to close the bar after the final drinks have been served. You can get dressed, gather your keys and check how you are travelling while the streets are still dark. With 5:00 am approaching, those twelve minutes are enough to leave bed without turning the start of the shift into a scramble.

Keeping this alarm visible behind another page may seem harmless while you check messages or the rota, but browsers can reduce activity on a page left in the background. Return to the alarm before relying on it and keep this page active where possible. A browser alarm will not sound if the session is closed or the computer goes to sleep, so your bar closing could be missed; use a separate alarm clock or phone alert when punctual cover is essential.

Getting ready for a bar shift at this hour can easily disturb anyone sleeping nearby. Lay out clothes, shoes and keys the evening before, keep the landing light low, and avoid letting doors latch loudly. If you share a house, choose a modest alarm volume and place the phone close enough to stop it promptly. At 4:48 am, a short vibration followed by a quiet tone may wake you without carrying through bedroom walls.

Common questions

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 4:48 am?

The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.

Do I need an account or an app?

Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.

Can I change the sound?

Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.