Set the alarm clock for 12:33 am

 

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

The alarm goes off in: ::
 
 

12:33 am across the country

London12:33 am
Birmingham12:33 am
Manchester12:33 am
Glasgow12:33 am
Belfast12:33 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 finish preparing the horses for their morning gallop and leave the yard, set the alarm for 12:33 am so the final check does not slip your mind. The timing leaves a useful margin before 1:00 am for putting away tack, securing gates and noting anything the trainer should know.

Once the horses are settled, keep this alarm page in the foreground if you are relying on it while completing the last jobs. A browser may give a background tab fewer resources, so its alarm can be delayed or silenced by the phone’s settings. If you close the page or let the phone go to sleep, the alarm for the horses may not sound at all; use the phone’s built-in alarm as a backup if you will already have left.

Before stepping away from the stable at 12:33 am, arrange enough light for the route you will use on returning, rather than leaving every lamp blazing through the night. A low, steady yard light near gates and uneven ground can make the early start more practical, while a torch placed with your keys avoids searching in darkness. Check the switch position before you leave, especially if a timer controls the exterior lights.

Common questions

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.

What happens if my laptop goes to sleep before 12:33 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.