Set the alarm clock for 9:18 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 9:16 am Alarm clock for 9:17 am Alarm clock for 9:19 am Alarm clock for 9:20 am

Going to bed for a 9:18 am alarm

Asleep by 12:03 am — 6 full sleep cycles, about 9 hours
Asleep by 1:33 am — 5 full sleep cycles, about 7 hours
Asleep by 3:03 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.

9:18 am across the country

London	9:18 am
Birmingham	9:18 am
Manchester	9:18 am
Glasgow	9:18 am
Belfast	9:18 am

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

How to use the online alarm clock

You are only just waking at 9:18 am, with the garden waste still waiting to be gathered for the council recycling centre. There is no need to rush straight outside: 10:00 am gives you a clear point for getting dressed, checking the centre’s opening hours and putting the bags or cuttings by the car.

Your recycling-centre run depends on the alarm sounding before the morning slips away, so leave this page running and keep the phone or computer awake. If the browser is closed or the equipment goes to sleep first, the alarm will not sound and the garden waste may remain at home. Set the volume high enough to hear from where you are resting, then check that the chosen time still reads 9:18 am.

With the garden waste trip planned for later this morning, decide now whether the sleep left after 9:18 am is genuinely usable. If you intend to rest again, place the phone beyond easy reach and leave the curtains slightly open, so getting up requires a deliberate movement and daylight is visible. Keep clothes, keys and any council booking details together before lying back down; that prevents the remaining sleep from being followed by a hurried search.

Common questions

What happens if my laptop goes to sleep before 9:18 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.