Set the alarm clock for 9:50 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 9:48 am Alarm clock for 9:49 am Alarm clock for 9:51 am Alarm clock for 9:52 am

Going to bed for a 9:50 am alarm

Asleep by 12:35 am — 6 full sleep cycles, about 9 hours
Asleep by 2:05 am — 5 full sleep cycles, about 7 hours
Asleep by 3:35 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.

9:50 am across the country

London	9:50 am
Birmingham	9:50 am
Manchester	9:50 am
Glasgow	9:50 am
Belfast	9:50 am

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

How to use the online alarm clock

Finish checking the water level in the rain barrel, then head back indoors with the alarm set for 9:50 am. It gives you a definite stopping point, so the quick garden job does not quietly run into the rest of the morning. With 10:00 am close behind, there is also a clear boundary before the next household task or working hour begins.

While you are away from the screen, the alarm page may sit behind another page or app. Browsers sometimes reduce activity in the background, so leaving this page visible gives the alert a better chance of sounding at the intended moment. If you close the page or allow the phone or computer to sleep, the barrel check could pass without an audible reminder. Keeping the sound turned up and the browser active avoids relying on an alert that the system has suspended.

Coming in from the barrel at this point in the morning leaves only a short stretch before 10:00 am. A glass of water or a cup of tea fits easily into that gap, especially after carrying a lid or watering can. A cooked breakfast or anything needing preparation is better left until after the alarm, when there is no need to abandon it midway to check the water level.

Common questions

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.

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 9:50 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.