Set the alarm clock for 11:57 pm

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

11:57 pm across the country

London11:57 pm
Birmingham11:57 pm
Manchester11:57 pm
Glasgow11:57 pm
Belfast11:57 pm

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

How to use the online alarm clock

While preparing to join the bell ringers for their tour of the bell tower, set the alarm for 11:57 pm before gathering your coat, keys and anything requested by the group. That leaves a brief margin before 12:00 am, so you can reach the meeting point and be ready when the midnight visit begins.

Your bell-tower preparations may take you into another app, leaving the alarm page in the background. Keep the browser available and check that sound is permitted, as background pages can sometimes be paused or muted. If the browser is closed or the phone goes to sleep, the alarm may not sound, which could leave the bell ringers waiting without you. For a firm backup, also use the phone’s built-in alarm.

Before stepping outside for the late-evening walk, check how damp the air feels as well as the temperature. Humidity near 11:57 pm can make cool conditions feel sharper, particularly around exposed stonework or while waiting by the entrance. A light waterproof layer and shoes with reliable grip are sensible if pavements or tower steps may be moist; keeping that layer easy to remove also helps once the group moves indoors.

Common questions

What happens if my laptop goes to sleep before 11:57 pm?

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.