Set the alarm clock for 4:32 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 4:30 am Alarm clock for 4:31 am Alarm clock for 4:33 am Alarm clock for 4:34 am

Going to bed for a 4:32 am alarm

Asleep by 7:17 pm — 6 full sleep cycles, about 9 hours
Asleep by 8:47 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:17 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.

4:32 am across the country

London	4:32 am
Birmingham	4:32 am
Manchester	4:32 am
Glasgow	4:32 am
Belfast	4:32 am

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

How to use the online alarm clock

While you watch the clock for the moment to leave and meet the last train at the station, set the alarm for 4:32 am as a clear cue to get moving. There is still time to check the departure board, gather your keys and allow for the walk or drive before 5:00 am.

Keeping another page in front need not stop the countdown, but a browser may reduce activity on a page left in the background. Leave this alarm page open, keep its sound permitted and avoid relying on a muted phone. If the browser closes or the phone enters a suspended state, the alarm cannot sound to get you to the station, so use a separate alarm as a safeguard for the last train.

Leaving at 4:32 am can carry noise through a quiet house, especially when others are asleep. Put your coat, shoes, bag and keys near the door earlier, lower the alarm volume to the level you can still hear, and disable vibration if the phone rests on a hard surface. Close doors gently and wait until you are outside before checking anything noisy.

Common questions

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 4:32 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.

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.