Set the alarm clock for 8:20 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 8:18 am Alarm clock for 8:19 am Alarm clock for 8:21 am Alarm clock for 8:22 am

Going to bed for a 8:20 am alarm

Asleep by 11:05 pm — 6 full sleep cycles, about 9 hours
Asleep by 12:35 am — 5 full sleep cycles, about 7 hours
Asleep by 2:05 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.

8:20 am across the country

London	8:20 am
Birmingham	8:20 am
Manchester	8:20 am
Glasgow	8:20 am
Belfast	8:20 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 flower preparation over to the next person, set the alarm for 8:20 am so the changeover has a clear finish point. Confirm which buckets are ready for Columbia Road Market and which stems still need trimming, wrapping or water. That leaves forty minutes before 9:00 am for the incoming person to settle into the routine without relying on a hurried verbal reminder.

With clippers, running water and people moving containers nearby, test the alarm at the volume you intend to use. A signal that seems clear in a quiet room may disappear beneath conversation or background music, so keep the phone close to the flower station and reduce competing sound near 8:20 am. Keep the alarm page running and the phone awake: otherwise no signal will sound, and the flowers may remain unfinished when it is time to leave.

Before the handover ends, check the planned route to Columbia Road and allow for the journey as it looks that morning. At this early hour, a delayed bus, a road closure or time spent loading buckets can consume the spare margin quickly. Put keys, travel card and the first load together so departure follows the 8:20 am signal without another search around the workspace.

Common questions

What happens if my laptop goes to sleep before 8:20 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.