Set the alarm clock for 3:34 am

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

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 3:32 am Alarm clock for 3:33 am Alarm clock for 3:35 am Alarm clock for 3:36 am

Going to bed for a 3:34 am alarm

Asleep by 6:19 pm — 6 full sleep cycles, about 9 hours
Asleep by 7:49 pm — 5 full sleep cycles, about 7 hours
Asleep by 9:19 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.

3:34 am across the country

London	3:34 am
Birmingham	3:34 am
Manchester	3:34 am
Glasgow	3:34 am
Belfast	3:34 am

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

How to use the online alarm clock

As you hand the evening responsibilities to someone else and get ready to leave for an NHS night shift, a 3:34 am alarm can mark the moment to stop explaining and start moving. It gives you a clear prompt before 4:00 am, whether you still need to collect your pass, check the last bus time or put your uniform in your bag.

Because this alarm is tied to a real handover and departure, test its sound now rather than discovering a problem when you need to leave. Set it briefly for the next minute, confirm the volume is noticeable, then restore 3:34 am. Keep the browser active and the computer or phone awake: if either is closed down or put to sleep, the alarm may not sound and your NHS shift could begin without that final prompt.

Leaving a warm bedroom for a night journey can make the handover feel more abrupt, especially if the heating has been running for hours. Set the room or air conditioning to a moderate level before resting, and place your uniform away from a direct cold draught. At 3:34 am, the change in temperature will then be less distracting while you gather what you need for the shift.

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 3:34 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.