Set the alarm clock for 9:28 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 9:26 am Alarm clock for 9:27 am Alarm clock for 9:29 am Alarm clock for 9:30 am

Going to bed for a 9:28 am alarm

Asleep by 12:13 am — 6 full sleep cycles, about 9 hours
Asleep by 1:43 am — 5 full sleep cycles, about 7 hours
Asleep by 3:13 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.

9:28 am across the country

London	9:28 am
Birmingham	9:28 am
Manchester	9:28 am
Glasgow	9:28 am
Belfast	9:28 am

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

How to use the online alarm clock

Finishing up before you leave to open the workshop beneath a railway arch, set the alarm for 9:28 am so the last jobs do not stretch into the rest of the morning. That gives you a clear stopping point for packing your keys, checking the shutters and heading out, with 10:00 am as the next useful marker for getting the doors open.

As you lock up and prepare for the workshop, check where the alarm sound will play. A phone or laptop may quietly route it to connected headphones, even when you are no longer wearing them, so confirm the output and choose a volume you can hear from across the room. Use the on-screen alarm as a visible backup while you finish. If you leave the page or let the phone sleep, the workshop alarm will not sound, which could make you late for opening; keep a separate phone alarm when timing matters.

Leaving for a railway arch at this point in the morning means the journey deserves a little margin. Allow for commuter traffic, school-run queues and a slower final approach near the station, then place your keys and anything needed for opening beside the door. The 32 minutes before 10:00 am may cover the trip on a clear route, but a familiar bottleneck can quickly use several of them.

Common questions

What happens if my laptop goes to sleep before 9:28 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.

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.