Set the alarm clock for 9:11 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 9:09 am Alarm clock for 9:10 am Alarm clock for 9:12 am Alarm clock for 9:13 am

Going to bed for a 9:11 am alarm

Asleep by 11:56 pm — 6 full sleep cycles, about 9 hours
Asleep by 1:26 am — 5 full sleep cycles, about 7 hours
Asleep by 2:56 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.

9:11 am across the country

London	9:11 am
Birmingham	9:11 am
Manchester	9:11 am
Glasgow	9:11 am
Belfast	9:11 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 9:11 am so you can leave your desk and join the office evacuation drill without losing track of the morning. Setting the alarm now gives you a clear point to break away, gather what you need and follow your workplace procedure. Once the drill is finished, there will still be time to settle back into your work before 10:00 am.

While you carry on with the task already under way, keep this alarm page open and make sure sound is allowed. It can remain in a background browser tab, although some browsers may slow or suspend a page that has been left there for a while. The office evacuation drill could therefore begin without an audible alert if the browser is closed or the computer goes to sleep, so use a separate workplace reminder if missing it would cause a problem.

Stepping outside for the drill may feel different from the air-conditioned office, even during a mild British morning. Check the local humidity and weather shortly beforehand, then keep a light layer within reach if the air feels damp or cool. At 9:11 am, opening a window for a moment before leaving can also give you a useful sense of the conditions outside.

Common questions

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.

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.