Set the alarm clock for 11:36 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 11:34 am Alarm clock for 11:35 am Alarm clock for 11:37 am Alarm clock for 11:38 am

Going to bed for a 11:36 am alarm

Asleep by 2:21 am — 6 full sleep cycles, about 9 hours
Asleep by 3:51 am — 5 full sleep cycles, about 7 hours
Asleep by 5:21 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.

11:36 am across the country

London	11:36 am
Birmingham	11:36 am
Manchester	11:36 am
Glasgow	11:36 am
Belfast	11:36 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 hand the primary-school run over to someone else at 11:36 am, set the alarm as the clear signal that they now need to take charge. Confirm who has the child’s bag, coat and any message for the teacher before you step away. With 12:00 pm approaching, there is enough time to make the changeover calmly without leaving a last-minute explanation.

For this handover, keep the alarm page open after choosing 11:36 am and check that your sound is audible. Closing the browser stops this alarm from sounding, and a sleeping phone or computer may also stay silent, so the person taking the child to primary school could miss the cue. If you cannot leave the page active, use a separate alarm on a device that will remain awake.

Once the school run belongs to the other person, allow for late-morning traffic rather than judging the journey by the quietest possible route. Check the live travel time shortly before departure, add a few minutes for finding a safe place to stop near the primary school, and agree where the child will be collected. Roads around local shops and school entrances can become slower as noon draws nearer.

Common questions

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.

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.