Set the alarm clock for 9:54 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 9:52 am Alarm clock for 9:53 am Alarm clock for 9:55 am Alarm clock for 9:56 am

Going to bed for a 9:54 am alarm

Asleep by 12:39 am — 6 full sleep cycles, about 9 hours
Asleep by 2:09 am — 5 full sleep cycles, about 7 hours
Asleep by 3:39 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.

9:54 am across the country

London	9:54 am
Birmingham	9:54 am
Manchester	9:54 am
Glasgow	9:54 am
Belfast	9:54 am

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

How to use the online alarm clock

Pause what you are doing at 9:54 am and use the alarm as the point when you leave your desk for the office evacuation drill. That gives you a clear break from the task already under way, with 10:00 am close enough to serve as a useful reference for anyone gathering at the designated assembly point.

An office drill can involve conversation, announcements and the general noise of people moving, so set the alarm volume high enough to stand out from that background. Keep the browser audible and place the phone or computer where the signal will not be muffled by a bag or paperwork. The evacuation drill reminder will not sound if the browser session has ended or the device has gone to sleep, so use a separate alarm if missing the cue would leave colleagues waiting.

Before stepping away for the morning drill, finish any hot tea or coffee rather than carrying it into a busy exit route. A small drink of water is practical if you have a moment, but leave breakfast, snacks and a fresh brew until everyone is back inside. At 9:54 am, this keeps your hands free and avoids abandoning food at short notice when the alarm sounds.

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 9:54 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.