Set the alarm clock for 11:38 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 11:38 am alarm

  • Asleep by 2:23 am — 6 full sleep cycles, about 9 hours
  • Asleep by 3:53 am — 5 full sleep cycles, about 7 hours
  • Asleep by 5:23 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.

11:38 am across the country

London11:38 am
Birmingham11:38 am
Manchester11:38 am
Glasgow11:38 am
Belfast11:38 am

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

How to use the online alarm clock

Waiting for 11:38 am, you keep checking the clock so you can leave for the school governors’ meeting at the intended moment. The alarm gives that waiting a clear endpoint without making you watch every passing minute. With 12:00 pm approaching, there is still time to gather your papers, check the venue and avoid a hurried departure.

Before the governors’ meeting takes over your attention, play a test signal and listen at the same volume and from the same place you expect to use later. That brief check reveals whether the tone is audible over conversation or household noise. If the browser page is closed or your phone or laptop goes to sleep, no alert will sound, so the school governors’ meeting could start without you. Leave the alarm running on an active screen after the test.

A late-morning journey to a school can feel different after stepping from a heated room into humid outdoor air. Check the conditions near 11:38 am and allow a moment for a coat, umbrella or lighter layer before setting off. On a damp British morning, keeping papers in a folder or bag also stops meeting notes becoming creased or wet on the way.

Common questions

What happens if my laptop goes to sleep before 11:38 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.