Set the alarm clock for 3:10 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:10 am alarm

  • Asleep by 5:55 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:25 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 8:55 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.

3:10 am across the country

London3:10 am
Birmingham3:10 am
Manchester3:10 am
Glasgow3:10 am
Belfast3:10 am

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

How to use the online alarm clock

Pause the tray you are preparing and set the alarm for 3:10 am, so you can return to the task until it sounds. That interruption can mark the moment to open the kitchen before guests arrive for an early breakfast, while still leaving the rest of the night’s preparation to be finished before 4:00 am.

Because this alarm runs in the browser, its page needs to remain open and the phone, tablet or computer must stay awake. Closing the tab or browser means the kitchen reminder will not sound, which could leave ovens warming late or the breakfast room unopened. Keeping the alarm visible also makes its status easy to check between jobs; volume can be confirmed before moving back to food preparation, laying tables or checking the morning delivery.

Moving between a warm kitchen and the street at 3:10 am can make outdoor dampness feel especially noticeable. If opening a rear entrance, putting out a sign or meeting a delivery, keep a dry layer near the door and allow a moment for misted glasses to clear. Humid night air may also leave paving and metal thresholds slick, so carrying supplies in smaller loads gives steadier footing during those final preparations for breakfast.

Common questions

What happens if my laptop goes to sleep before 3:10 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.