Set the alarm clock for 9:45 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 9:43 am Alarm clock for 9:44 am Alarm clock for 9:46 am Alarm clock for 9:47 am

Going to bed for a 9:45 am alarm

Asleep by 12:30 am — 6 full sleep cycles, about 9 hours
Asleep by 2:00 am — 5 full sleep cycles, about 7 hours
Asleep by 3:30 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.

9:45 am across the country

London	9:45 am
Birmingham	9:45 am
Manchester	9:45 am
Glasgow	9:45 am
Belfast	9:45 am

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

How to use the online alarm clock

While you wait to show the meter reading to the water company representative, setting an alarm for 9:45 am lets you watch the time without repeatedly checking the clock. It also leaves a clear quarter-hour before 10:00 am, which may be useful if the appointment is running late or you need to note the reading before the visit.

Because this alarm works in your browser, closing the page or quitting the browser stops it from sounding; that could leave the representative waiting while you miss the intended moment. Keep the page open and your phone or computer awake, with the volume high enough to hear. You can remain on the alarm screen while checking that the displayed time is 9:45 am.

As the appointment approaches, move somewhere you can still hear the alarm over the morning activity around your home. By 9:45 am, traffic, deliveries and household appliances may be louder than they were earlier, so avoid leaving the phone beside a running kettle, washing machine or open window. A firm volume and a nearby position make the signal easier to notice without disturbing the conversation.

Common questions

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 9:45 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.