Set the alarm clock for 4:54 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 4:52 am Alarm clock for 4:53 am Alarm clock for 4:55 am Alarm clock for 4:56 am

Going to bed for a 4:54 am alarm

Asleep by 7:39 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:09 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:39 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.

4:54 am across the country

London	4:54 am
Birmingham	4:54 am
Manchester	4:54 am
Glasgow	4:54 am
Belfast	4:54 am

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

How to use the online alarm clock

You are halfway through another task when the 4:54 am alarm has to pull you away to meet the ferry from Belfast in Liverpool. That precise signal gives you a clear stopping point before checking the arrival details, gathering your things and heading towards the terminal. By 5:00 am, you can be moving rather than wondering whether it is time to leave.

For a ferry collection at this hour, the browser needs to remain active after the alarm is set. Closing its page or the browser cancels the signal, while a sleeping phone or laptop cannot sound it; either could make you late for the ferry. Check that the volume is audible before returning to your unfinished task, and place the device where the tone will not be muffled by bedding or a bag.

The drive towards Liverpool may begin before breakfast feels appealing, so a glass of water and a small, familiar snack can be practical before departure. A heavier meal is easier to leave until after the Belfast ferry has arrived and everyone is away from the terminal. If you take a hot drink, use a secure lidded cup and finish preparing it before 4:54 am, so the alarm marks a clean break for leaving.

Common questions

What happens if my laptop goes to sleep before 4:54 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.

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.