Set the alarm clock for 8:31 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 8:29 am Alarm clock for 8:30 am Alarm clock for 8:32 am Alarm clock for 8:33 am

Going to bed for a 8:31 am alarm

Asleep by 11:16 pm — 6 full sleep cycles, about 9 hours
Asleep by 12:46 am — 5 full sleep cycles, about 7 hours
Asleep by 2:16 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.

8:31 am across the country

London	8:31 am
Birmingham	8:31 am
Manchester	8:31 am
Glasgow	8:31 am
Belfast	8:31 am

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

How to use the online alarm clock

While you are laying out punnets and checking the picking baskets, an 8:31 am alarm can mark the planned start for gathering strawberries before the farm stall opens. Preparing it now leaves 29 minutes before 9:00 am, enough time to get everyone into the rows and bring the first filled containers back without watching the clock.

For strawberry picking, the alarm needs to be audible outdoors rather than merely visible on the screen. The selected time can remain set while you finish the other preparations, but the device’s silent mode may suppress the sound, so its audio setting merits a quick check beforehand. If the browser tab is closed, or the phone or laptop falls asleep, the alarm cannot sound and the strawberries may still be in the field when the stall is due to open.

Among the strawberry rows, the surroundings often become noticeably busier as 9:00 am approaches: vehicles arrive, people begin talking, and crates are moved around. At 8:31 am, placing the phone nearby on a dry, stable surface makes its tone easier to distinguish from that growing background noise. A sound unlike the usual message alert also reduces the chance of mistaking the alarm for an everyday notification.

Common questions

What happens if my laptop goes to sleep before 8:31 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.