Set the alarm clock for 3:30 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:30 am alarm

  • Asleep by 6:15 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:45 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:15 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.

3:30 am across the country

London3:30 am
Birmingham3:30 am
Manchester3:30 am
Glasgow3:30 am
Belfast3:30 am

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

How to use the online alarm clock

Handing the Yorkshire lambing check to the next person means making the changeover clear before leaving the farm. An alarm set for 3:30 am marks the agreed handover, while 4:00 am provides a natural point for the incoming worker’s first update. That half-hour leaves room to explain which ewes have been watched, where equipment is kept and what still needs checking.

During the lambing handover, the alarm page may be left behind another page while notes or messages are opened. It can continue counting in the background, although some browsers may restrict an inactive page and delay its sound. Keeping this page in the foreground near 3:30 am makes the alert more dependable. The alarm cannot cover the lambing check if the browser session has ended or the computer has gone to sleep, so a separate alarm is sensible when the changeover cannot be missed.

Leaving a Yorkshire farm after the handover can involve narrow lanes before reaching an A-road. A journey around 3:30 am may meet little traffic, but darkness, livestock, overnight roadworks and frost can still add time. Allowing a few extra minutes keeps the expected arrival realistic, especially when the route begins on an unlit lane or passes through villages with reduced speed limits.

Common questions

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 3:30 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.