Set the alarm clock for 5:49 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 5:47 am Alarm clock for 5:48 am Alarm clock for 5:50 am Alarm clock for 5:51 am

Going to bed for a 5:49 am alarm

Asleep by 8:34 pm — 6 full sleep cycles, about 9 hours
Asleep by 10:04 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:34 pm — 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.

5:49 am across the country

London	5:49 am
Birmingham	5:49 am
Manchester	5:49 am
Glasgow	5:49 am
Belfast	5:49 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 Columbia Road flower-market preparations over to the next person, a 5:49 am alarm can mark the moment they need to take charge. It leaves a short, useful stretch before 6:00 am for checking buckets, wrapping and the first items heading towards the van, without relying on a hurried verbal reminder.

The right sound depends on where the flower handover is happening. A softer tone suits a quiet kitchen or back room when someone is already nearby, while a more persistent sound makes sense if they are moving between the stock and the vehicle. The alarm cannot take over once the browser is no longer active or the computer has gone to sleep, so the person responsible for the flowers should also have a separate backup if missing 5:49 am would disrupt the handover.

With market preparation happening before most of the house is awake, the alarm is less intrusive when the phone or laptop stays close to the person taking the shift. Keeping the volume just high enough for that room, and away from shared walls or a sleeping child’s room, reduces the chance that everyone hears it. A brief vibration can provide an extra cue without turning this early handover into a household wake-up.

Common questions

What happens if my laptop goes to sleep before 5:49 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.