Set the alarm clock for 10:47 am

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

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 10:45 am Alarm clock for 10:46 am Alarm clock for 10:48 am Alarm clock for 10:49 am

Going to bed for a 10:47 am alarm

Asleep by 1:32 am — 6 full sleep cycles, about 9 hours
Asleep by 3:02 am — 5 full sleep cycles, about 7 hours
Asleep by 4:32 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.

10:47 am across the country

London	10:47 am
Birmingham	10:47 am
Manchester	10:47 am
Glasgow	10:47 am
Belfast	10:47 am

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

How to use the online alarm clock

Finishing your MOT at the garage at 10:47 am leaves just enough time to collect the paperwork, check that the keys are back in your hand and head out before 11:00 am. An alarm for this exact time gives the appointment a clear endpoint, especially if the final checks or a chat with the mechanic have run longer than expected.

Leaving a workshop can be noisy, so check the sound setting and volume while you can still hear a test alert. Silent mode may suppress the alarm or make it easy to overlook among other notifications. This browser alarm cannot sound after its page is closed or your phone has gone to sleep, so an MOT departure could be missed if it is your only reminder. Keep the alarm page active and the phone awake until 10:47 am.

Stepping outside after a late-morning MOT can feel different from the conditions on the journey in, particularly when the air is humid. Before leaving the garage, allow a moment to clear any mist from the windscreen and adjust the ventilation. At this hour, opening the doors briefly may also freshen a stuffy car before setting off.

Common questions

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 10:47 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.