Set the alarm clock for 9:25 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 9:25 am alarm

  • Asleep by 12:10 am — 6 full sleep cycles, about 9 hours
  • Asleep by 1:40 am — 5 full sleep cycles, about 7 hours
  • Asleep by 3:10 am — 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.

9:25 am across the country

London9:25 am
Birmingham9:25 am
Manchester9:25 am
Glasgow9:25 am
Belfast9:25 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 checking tools and stock when 9:25 am signals that it is time to break off and open the workshop beneath the railway arch. That interruption matters: another small job can easily absorb the remaining morning. The alarm leaves 35 minutes before 10:00 am, enough to unlock the shutters, switch on the lights and prepare the bench before the round hour.

A railway arch can amplify passing trains, shutter noise and work happening next door, so the alarm tone needs to suit the setting. A gentle sound may be sufficient while you are working quietly nearby; a more insistent one makes sense if machinery or traffic could mask it. The selected tone and volume can be checked beforehand. Your workshop may stay shut past opening time if the browser page is closed or the phone or laptop falls asleep, because the alarm will not sound.

Under the arch, morning daylight may sit behind the entrance while the work area remains dim, making a bright screen feel harsh when you glance at it. Keeping the display at a comfortable brightness and positioning it away from direct glare makes the 9:25 am alert easier to read. A larger on-screen time also reduces the need to peer at small figures while moving between the shutters, tools and bench.

Common questions

Will it still be right when the clocks change?

Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.

Can I use this on a phone?

It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.

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 9:25 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.