Set the alarm clock for 9:13 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 9:11 am Alarm clock for 9:12 am Alarm clock for 9:14 am Alarm clock for 9:15 am

Going to bed for a 9:13 am alarm

Asleep by 11:58 pm — 6 full sleep cycles, about 9 hours
Asleep by 1:28 am — 5 full sleep cycles, about 7 hours
Asleep by 2:58 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.

9:13 am across the country

London	9:13 am
Birmingham	9:13 am
Manchester	9:13 am
Glasgow	9:13 am
Belfast	9:13 am

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

How to use the online alarm clock

Getting ready at 9:13 am for a vaccination at your local pharmacy leaves time to gather what you need before setting out. Check the appointment details, put any requested identification with your keys and choose clothing with an easily accessible sleeve. The 47 minutes before 10:00 am can cover those preparations without making the morning feel hurried.

A vaccination reminder may be overlooked if the alarm page has slipped behind messages, maps or the pharmacy’s details. A background tab usually remains open, although the browser may give it less attention, so checking the selected sound and volume beforehand adds reassurance. If you close the page or allow your phone or laptop to sleep, the alarm cannot sound and your pharmacy visit could be missed.

Leaving for a local pharmacy during the morning can take longer once school traffic and commuter queues build. Work backwards from the appointment time using the journey shown by your usual route, then allow a few extra minutes for crossings, parking or a delayed bus. Setting the alarm for 9:13 am gives it a clear role: the point when preparation ends and the trip begins.

Common questions

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.

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.