Set the alarm clock for 5:46 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 5:44 am Alarm clock for 5:45 am Alarm clock for 5:47 am Alarm clock for 5:48 am

Going to bed for a 5:46 am alarm

Asleep by 8:31 pm — 6 full sleep cycles, about 9 hours
Asleep by 10:01 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:31 pm — 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.

5:46 am across the country

London	5:46 am
Birmingham	5:46 am
Manchester	5:46 am
Glasgow	5:46 am
Belfast	5:46 am

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

How to use the online alarm clock

As you finish packing the last snack and head for the door, a 5:46 am alarm can mark the moment to send your child to a before-school club. It keeps the departure tied to a clear time rather than another glance at the clock, while leaving 14 minutes before 6:00 am for the final handover.

Because the club run ends with you leaving the house, the alarm needs to remain able to play after it has been set. Keep this page active and the phone awake, with the volume high enough to hear over coats, keys and breakfast clearing. If the browser is shut or the phone goes to sleep, the alarm cannot sound, which could leave your child late for the club.

An early club departure can make the rest of the morning feel as though it has already started at full pace. Before leaving, identify the next fixed commitment after drop-off and allow a separate buffer for the return journey, traffic near the school and getting back indoors. Treat any spare minutes as protection for that next task, rather than filling them with an extra errand that turns a small delay into a rushed morning.

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 5:46 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.