Set the alarm clock for 2:39 pm

 

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

The alarm goes off in: ::
 
 

2:39 pm across the country

London2:39 pm
Birmingham2:39 pm
Manchester2:39 pm
Glasgow2:39 pm
Belfast2:39 pm

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

How to use the online alarm clock

Waking at 2:39 pm leaves little room to linger if you are meeting colleagues for a Sunday roast at the pub. Set the alarm for the time you need to get moving, then use the approach to 3:00 pm for getting dressed, checking the route and gathering your keys. That keeps the first few groggy minutes separate from the moment you actually need to leave.

While you get ready, this alarm page can sit behind your route map or messages; switching to another browser tab does not normally cancel the timer. Keep the browser running, and return briefly if your phone starts limiting background activity. If the page is closed or the phone sleeps, the alarm for meeting your colleagues may not sound, so use a built-in alarm as a backup when punctuality matters.

Heading towards the pub in mid-afternoon can feel unexpectedly close or muggy, even on a grey British Sunday. Before choosing a coat, open a window or step outside for half a minute to judge the humidity and moving air directly. A light layer that can be carried may suit the walk better than something chosen from the view through the glass, especially if you are hurrying for 3:00 pm.

Common questions

What happens if my laptop goes to sleep before 2:39 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.