Set the alarm clock for 9:35 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 9:33 am Alarm clock for 9:34 am Alarm clock for 9:36 am Alarm clock for 9:37 am

Going to bed for a 9:35 am alarm

Asleep by 12:20 am — 6 full sleep cycles, about 9 hours
Asleep by 1:50 am — 5 full sleep cycles, about 7 hours
Asleep by 3:20 am — 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.

9:35 am across the country

London	9:35 am
Birmingham	9:35 am
Manchester	9:35 am
Glasgow	9:35 am
Belfast	9:35 am

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

How to use the online alarm clock

Get ready for your local pharmacy vaccination before the 9:35 am alarm is due, so you are not searching for essentials when it sounds. Put your keys, appointment details and anything you plan to take by the door. That leaves a useful margin before 10:00 am for the journey and any routine delay along the way.

Your vaccination reminder needs the browser to keep running until 9:35 am; if it stops running or your phone falls asleep first, the alarm may not sound and you could miss your planned departure. Keep the page active, leave the phone awake and connect it to power if the battery is low. Set the volume at a level you can hear from wherever you are getting ready, then check that silent mode will not undermine the alert.

As you finish preparing for the pharmacy during the morning, consider who else is still at home. A loud alarm at 9:35 am could interrupt someone working, resting after a night shift or settling a child. Keep the phone near you rather than turning the volume up across the house, and choose a room where the sound will reach you without carrying unnecessarily. If someone else needs warning, mention the alarm beforehand so its sudden sound does not cause confusion.

Common questions

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.

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.