Set the alarm clock for 3:25 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:25 am alarm

  • Asleep by 6:10 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:40 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:10 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.

3:25 am across the country

London3:25 am
Birmingham3:25 am
Manchester3:25 am
Glasgow3:25 am
Belfast3:25 am

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

How to use the online alarm clock

While preparing for a night delivery at the pub, set the alarm for 3:25 am before settling down, so the collection point, keys and exterior light are sorted well ahead of the driver’s arrival. That leaves a clear checkpoint before 4:00 am, without relying on a hurried glance at the clock when the vehicle pulls up.

For this pub delivery, check the phone’s silent setting while there is still time to test the alarm at a low volume. Silent mode can suppress browser audio on some setups, even though the alarm appears ready, so confirm that sound is permitted and set the volume high enough to hear from where you will rest. Keep the browser running and the phone awake: if either stops, the delivery alarm may never sound, leaving the driver outside.

Once the handover is finished at 3:25 am, keep the return to bed brief and predictable. Leave any paperwork together for daylight, dim the lights again, and avoid starting another pub task unless it cannot wait. With 35 minutes until 4:00 am, a prepared route back upstairs or to the staff room helps preserve more of the sleep still available before morning duties begin.

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 3:25 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.