Set the alarm clock for 11:35 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 11:35 am alarm

  • Asleep by 2:20 am — 6 full sleep cycles, about 9 hours
  • Asleep by 3:50 am — 5 full sleep cycles, about 7 hours
  • Asleep by 5:20 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.

11:35 am across the country

London11:35 am
Birmingham11:35 am
Manchester11:35 am
Glasgow11:35 am
Belfast11:35 am

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

How to use the online alarm clock

Waking up with a school trustees’ meeting still ahead can make the morning feel suddenly compressed. An alarm set for 11:35 am gives you a clear point to stop getting ready, collect any papers and switch attention to leaving. It also falls close enough to 12:00 pm to serve as a firm final reminder before the morning disappears.

Because the trustees’ meeting depends on a timely alert, the browser needs to remain available until 11:35 am. If you close this page or the browser, the alarm will not sound for the meeting; allowing the phone to sleep may also prevent the alert. Keeping the page visible, the sound turned up and the phone awake makes the reminder more dependable while you wash, dress or gather notes nearby.

For a school trustees’ meeting, the journey deserves its own margin rather than whatever time remains after getting ready. Late-morning roads may still be slowed by local traffic, roadworks or vehicles around school entrances, and parking can add several minutes. Checking the route before 11:35 am helps separate travelling time from preparation time, with a small allowance for finding the correct entrance once you arrive.

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.