Set the alarm clock for 10:35 pm

 

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

The alarm goes off in: ::
 
 

10:35 pm across the country

London10:35 pm
Birmingham10:35 pm
Manchester10:35 pm
Glasgow10:35 pm
Belfast10:35 pm

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

How to use the online alarm clock

Before handing the late check to someone else, confirm that they will close the henhouse against urban foxes when the 10:35 pm alarm sounds. That gives the person taking over a clear cue rather than a vague instruction to go out sometime before 11:00 pm. Agree where the latch and torch are, then leave the final check with them.

Since the henhouse depends on a sound prompt, test the alarm now, while both of you can hear whether its volume is sufficient. Set it for a minute or two ahead, wait for the signal, then restore 10:35 pm and keep the browser running. Because this browser alarm cannot sound after its active session ends or the computer goes to sleep, the henhouse could remain open unless the person on duty also has a separate reminder.

Anyone going into the garden late in the evening will be more comfortable if food and drinks are settled beforehand. A small glass of water or a light snack can fit before 10:35 pm without turning the handover into a rushed job. Leave a full meal, a hot drink that needs attention, or anything likely to delay the outdoor check until the henhouse is latched and the person taking over is back indoors.

Common questions

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 10:35 pm?

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.