Set the alarm clock for 10:09 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 10:07 am Alarm clock for 10:08 am Alarm clock for 10:10 am Alarm clock for 10:11 am

Going to bed for a 10:09 am alarm

Asleep by 12:54 am — 6 full sleep cycles, about 9 hours
Asleep by 2:24 am — 5 full sleep cycles, about 7 hours
Asleep by 3:54 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.

10:09 am across the country

London	10:09 am
Birmingham	10:09 am
Manchester	10:09 am
Glasgow	10:09 am
Belfast	10:09 am

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

How to use the online alarm clock

Waking at 10:09 am gives you a clear moment to get ready for a circular walk along a public footpath before the morning slips away. You have time to dress, check the route and pack water without treating 11:00 am as a hard departure deadline. The alarm can mark the point when preparation ends and the walk begins.

For a quiet household, a gentle tone can bring you round without making the start feel abrupt; if you often dismiss alerts while half awake, a more persistent sound better suits this particular departure. Set the volume high enough to hear from across the room, then leave the browser running and keep the phone awake. Otherwise, the alarm will not signal the start of your footpath walk, and you may remain indoors past the time you meant to leave.

Before setting out in the late morning, keep the route details available but avoid staring at a bright screen while your eyes are still adjusting after sleep. Lower the display brightness to suit the room, enlarge any map section you need, and note the first turning. Once outside, that preparation reduces repeated screen checks while following the public path.

Common questions

What happens if my laptop goes to sleep before 10:09 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.

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.