Set the alarm clock for 2:37 am

 

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

The alarm goes off in: ::
 
 

2:37 am across the country

London2:37 am
Birmingham2:37 am
Manchester2:37 am
Glasgow2:37 am
Belfast2:37 am

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

How to use the online alarm clock

While arranging the West End collection in advance, set the alarm for 2:37 am so there is time to gather your keys, check the pickup point and be ready before the late performance finishes. With 3:00 am approaching, the reminder can mark the moment to leave rather than the moment to start getting organised.

A quiet tone may suit anyone else sleeping nearby, while a more persistent sound gives the crew collection less chance of slipping past unnoticed. Choose the tone with both the household and the urgency of departure in mind, then set a volume that you can hear from where the phone will be kept. Because a browser alarm cannot sound after its page is closed or the phone has gone to sleep, the crew could be left waiting; keep the page running and use a separate backup if the pickup cannot be missed.

Before leaving for the theatre district, check the whole night route rather than relying on the usual daytime journey. Roads may be clearer at 2:37 am, but overnight closures, diversions and limited access around central London can add unexpected minutes. Allow a small buffer, confirm where stopping is permitted, and note the return route as well as the outward one.

Common questions

What happens if my laptop goes to sleep before 2:37 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.