Set the alarm clock for 4:56 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 4:54 am Alarm clock for 4:55 am Alarm clock for 4:57 am Alarm clock for 4:58 am

Going to bed for a 4:56 am alarm

Asleep by 7:41 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:11 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:41 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.

4:56 am across the country

London	4:56 am
Birmingham	4:56 am
Manchester	4:56 am
Glasgow	4:56 am
Belfast	4:56 am

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

How to use the online alarm clock

Getting the pub ready for a night delivery means setting the 4:56 am alarm before the driver is due, while there is still time to check the entrance and put the keys somewhere handy. It gives you a clear prompt just before 5:00 am, so you can move from quiet preparation to watching for the van without repeatedly checking the clock.

Match the alarm tone to what the pub will be like when it rings. A softer sound may be enough if you are waiting in a silent bar with the phone beside you; choose a more persistent tone if refrigeration, cleaning equipment or movement in the cellar could mask it. Set the volume now and play a brief test from the place where you expect to wait. If the browser is no longer active or the phone falls asleep, the alarm will not sound, so the delivery could be missed; keep a separate backup for anything time-sensitive.

Waiting inside a closed pub can make small noises seem prominent, but the soundscape may shift near 5:00 am as early traffic, refuse collections and kitchen equipment begin. Keep the phone on a hard surface rather than in a coat pocket, and stay close enough to distinguish its tone from the surrounding clatter.

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 4:56 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.