Set the alarm clock for 12:35 am

 

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

The alarm goes off in: ::
 
 

12:35 am across the country

London12:35 am
Birmingham12:35 am
Manchester12:35 am
Glasgow12:35 am
Belfast12:35 am

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

How to use the online alarm clock

With the last guyline checked after the storm, you are leaving the Lake District campsite and want a 12:35 am alarm to mark the end of the inspection. Set it before packing away your torch, then confirm that the displayed time is correct. The alert leaves enough of the night before 1:00 am to reach shelter, note any damaged tents and finish the job without lingering on the wet pitch.

Before walking away from the tents, check the phone’s sound setting as well as the alarm shown on screen. Silent mode may suppress or soften the alert, depending on the browser and handset, so raise the media volume and use a sound you can recognise outdoors. This browser alarm cannot ring after its page is closed or the phone falls asleep, which could leave the tents without their planned final check. Keep the page active and the phone awake until 12:35 am; a separate handset alarm is sensible if you must lock it.

Leaving a rain-lashed pitch at this hour means stepping from damp canvas into colder, moisture-heavy air. Keep a waterproof layer accessible rather than buried in a rucksack, and wipe the phone screen before handling the alarm because raindrops can cause missed taps. At 12:35 am, paths and pegs are harder to distinguish under torchlight, so pause beside each tent, face away from gusts while making notes, and check that nothing loose has been left where someone could trip before heading indoors.

Common questions

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 12:35 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.