Set the alarm clock for 3:24 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:24 am alarm

  • Asleep by 6:09 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:39 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:09 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.

3:24 am across the country

London3:24 am
Birmingham3:24 am
Manchester3:24 am
Glasgow3:24 am
Belfast3:24 am

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

How to use the online alarm clock

You are halfway through preparing the print forms for the newspaper’s morning edition when the 3:24 am alarm needs to break your concentration. Set it as the point for leaving the current page, checking that the files are saved, and handing the next stage over. That creates a clear stopping point before 4:00 am, rather than letting one final adjustment stretch into the next hour.

A press deadline may call for a firmer sound than work that can pause without urgency. Choose a gentle tone if nearby colleagues are resting or concentrating, but use a more insistent one if printing depends on you moving promptly. Keep the volume audible above office or press-room noise. Because this alarm works only while its browser page stays open and the computer remains awake, it cannot pull you away from the newspaper forms if either condition changes.

Breaking away from detailed forms during the night can feel abrupt when the room is dim and the screen is bright. Before returning to the layout, switch on a low desk lamp or another light that reaches the papers and your route away from the workstation. Avoid leaving yourself to cross a dark room immediately after 3:24 am; arranging the light beforehand makes the alarm a practical cue to stand up and move.

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 3:24 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.