Set the alarm clock for 11:29 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 11:29 am alarm

  • Asleep by 2:14 am — 6 full sleep cycles, about 9 hours
  • Asleep by 3:44 am — 5 full sleep cycles, about 7 hours
  • Asleep by 5:14 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.

11:29 am across the country

London11:29 am
Birmingham11:29 am
Manchester11:29 am
Glasgow11:29 am
Belfast11:29 am

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

How to use the online alarm clock

If you are halfway through bagging garden waste at 11:29 am, set this alarm before another trip to the shed makes you lose track. It gives you a clear point to stop lifting, wash your hands and get the car ready, while still leaving enough breathing room before 12:00 pm. Keep the council recycling centre’s closing time separate in your plans.

A test signal now is more useful than discovering later that the volume was low beneath rustling sacks and an open back door. Choose 11:29 am, save the alarm, then set a brief trial and listen from the place where you are working. Leave this browser page active and keep the phone awake: if either condition changes, the alarm cannot call you away from the garden-waste job.

Once the bags are by the car, the soundscape can shift quickly from late-morning garden noise to engines and people arriving around lunchtime. Put the phone on a hard, clear surface rather than a coat or compost sack, which can muffle it, and keep it close enough to hear over a mower or passing refuse lorry. At 11:29 am, a distinct tone will stand out better than a quiet default chime.

Common questions

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 11:29 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.