Set the alarm clock for 11:09 pm

 

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

The alarm goes off in: ::
 
 

11:09 pm across the country

London11:09 pm
Birmingham11:09 pm
Manchester11:09 pm
Glasgow11:09 pm
Belfast11:09 pm

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

How to use the online alarm clock

Handing the last task to a colleague at 11:09 pm leaves you free to concentrate on reaching the start of the Proms at the Royal Albert Hall. The alarm marks the moment to finish the handover, gather your things and leave, while 12:00 am provides a clear backstop if the changeover takes longer than expected.

For this Proms departure, the alarm’s sound needs checking before attention returns to the handover. Silent mode, reduced media volume or connected earphones can make the alert easy to miss, so a brief sound test confirms where it will be heard. If the browser page is closed or the phone goes to sleep, the alarm cannot sound; that means the Proms journey should also have a separate reminder if nobody will keep the page active.

Stepping outside after an evening handover can feel noticeably different from leaving earlier, particularly when humid air hangs around London’s streets. A light layer that is easy to carry suits the walk between the Tube and the hall, while a compact umbrella covers a sudden shower without adding much bulk. Checking the air outside before setting off also helps decide whether the final stretch is more comfortable on foot or by public transport.

Common questions

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.

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.