Set the alarm clock for 5:27 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 5:25 am Alarm clock for 5:26 am Alarm clock for 5:28 am Alarm clock for 5:29 am

Going to bed for a 5:27 am alarm

Asleep by 8:12 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:42 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:12 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.

5:27 am across the country

London	5:27 am
Birmingham	5:27 am
Manchester	5:27 am
Glasgow	5:27 am
Belfast	5:27 am

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

How to use the online alarm clock

Pause halfway through bunching the flowers for Columbia Road Market and set the alarm for 5:27 am, so the current job has a firm stopping point. It can pull you away from trimming stems, filling buckets or checking labels before the morning gets busier. There are 33 minutes until 6:00 am, enough to finish one clearly defined batch rather than losing track while moving between tasks.

While the flowers are being prepared, this alarm page may slip behind another page as you check a note or message. It should continue counting in the background, though browser and phone settings can sometimes delay sound from an inactive page. Keep this page open and the phone awake with its volume audible: if the page is closed or the phone sleeps, the alarm cannot signal when the flowers need to be left for the next task.

Under dim kitchen or workroom lighting, repeated glances at a bright screen can feel harsh at this early hour. Lower the display brightness before returning to the flowers, use a warmer screen setting if available, and leave the phone where the time is readable without bringing it close to your eyes. A single check after setting 5:27 am is usually enough; the audible alert can handle the interruption.

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.