Set the alarm clock for 5:28 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 5:28 am alarm

  • Asleep by 8:13 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 9:43 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 11:13 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.

5:28 am across the country

London5:28 am
Birmingham5:28 am
Manchester5:28 am
Glasgow5:28 am
Belfast5:28 am

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

How to use the online alarm clock

Ahead of morning surgery, you can use a 5:28 am alarm to begin preparing the GP consulting room before anyone needs it. That leaves a measured stretch for checking the couch paper, computer, clinical waste bins and basic supplies, rather than discovering a missing item when the first patient arrives. With 6:00 am approaching, the room can be ready while the practice is still quiet.

For this early setup, the sound should match how easily you wake and whether anyone nearby is still resting. A soft tone can mark the start without cutting through the whole household; a firmer, repeating tone is more suitable if you often silence alarms half-awake. Set the volume now and test it briefly. The GP room could remain unprepared if this browser alarm is no longer active when the phone sleeps or the page is closed.

Because this start comes before dawn for much of the year, decide in advance whether you are returning to bed afterwards. Keep the light low, lay out what you need for the surgery, and avoid lingering over messages once the room is sorted. That protects the sleep still available after 5:28 am and makes a second alarm useful if your day begins later.

Common questions

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.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.