Set the alarm clock for 10:24 am

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

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 10:22 am Alarm clock for 10:23 am Alarm clock for 10:25 am Alarm clock for 10:26 am

Going to bed for a 10:24 am alarm

Asleep by 1:09 am — 6 full sleep cycles, about 9 hours
Asleep by 2:39 am — 5 full sleep cycles, about 7 hours
Asleep by 4:09 am — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

10:24 am across the country

London	10:24 am
Birmingham	10:24 am
Manchester	10:24 am
Glasgow	10:24 am
Belfast	10:24 am

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

How to use the online alarm clock

Getting ready at 10:24 am gives you time to clear the cupboard around the gas meter, find any relevant paperwork and listen for the gas engineer. The alarm can mark the point when preparation should stop and waiting should begin, well before 11:00 am. Keep this browser page open and the phone or computer awake, otherwise the reminder for the engineer will not sound.

Preparing for a gas visit calls for a tone that fits what you will be doing when the alarm rings. A gentle sound may be enough if you are sitting nearby with the screen in view, while a more persistent tone makes sense if you could be upstairs, running a tap or sorting the meter area. Choose something clearly different from your usual message alert, then check the volume so the signal is noticeable without being unnecessarily jarring.

A mid-morning appointment may overlap with remote work, household jobs or someone else having a quiet start. Tell other people at home why the 10:24 am alarm is set, particularly if the sound carries between rooms. Placing the phone close to you and using moderate volume can prevent the reminder from disturbing everyone while still giving you a clear cue to pause and be ready for the visit.

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 10:24 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.