Set the alarm clock for 3:09 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:09 am alarm

  • Asleep by 5:54 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:24 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 8:54 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.

3:09 am across the country

London3:09 am
Birmingham3:09 am
Manchester3:09 am
Glasgow3:09 am
Belfast3:09 am

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

Online alarm clock for 3:09 am

As you hand the early bun bake over to the next person at 3:09 am, set the alarm for the moment they need to begin mixing, proving or heating the ovens. The alert gives the changeover a clear reference point while the tearoom is still quiet, with 4:00 am close enough to shape the first stage of the morning’s work.

During the handover, the alarm page may sit behind a recipe, rota or message window, so keep its sound enabled and leave the browser running. A background page can remain available, but closing the browser or letting the computer sleep means the bun bake may receive no alert at all. Check the volume before stepping away, then tell the incoming baker which machine is carrying the alarm so they are not listening for the wrong one.

Once the incoming baker has taken charge at this hour of the night, make the remaining sleep easier to protect: leave a brief written note with the batch size, oven setting and any ingredients already prepared. Keep your phone away from the bedside if the alarm is staying on the bakery computer. That separates the 3:09 am handover from your own wake-up time and reduces the chance that a work notification interrupts the sleep still available before morning.

Common questions

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.

What happens if my laptop goes to sleep before 3:09 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.