Set the alarm clock for 6:42 pm

 

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

The alarm goes off in: ::
 
 

6:42 pm across the country

London6:42 pm
Birmingham6:42 pm
Manchester6:42 pm
Glasgow6:42 pm
Belfast6:42 pm

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

How to use the online alarm clock

As you finish up and head out, set the alarm for 6:42 pm so the tool goes back into the library of things before you leave. That gives you a clear stopping point rather than another glance at the clock while packing away. By 7:00 pm, the return can be finished and you can carry on with the evening.

A quiet setting suits a calm library, but a gentle chime may disappear beneath conversation, traffic outside or the sound of putting things away. Choose a firmer tone if missing 6:42 pm would mean taking the tool home accidentally; use a softer one when the room is still and the phone is close by. Keep the alarm page open and the phone awake, because otherwise the library reminder will not sound when you need to return the tool.

Leaving with the tool at 6:42 pm can feel different depending on the dampness outside. A humid British afternoon may make the air feel close even when the temperature has dropped, so pause by the exit before adding another layer. If the air is muggy, keep a light jacket easy to carry; if it feels fresh, put it on before walking away from the library rather than stopping again outside.

Common questions

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.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 6:42 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.