How to use the online alarm clock
While you watch the clock for the moment to close the curtains before darkness falls, set the alarm for 10:41 pm and leave the evening free until it sounds. That gives you a clear cue without repeatedly checking the time, while 11:00 pm remains a useful marker for whatever comes afterwards.
Because your cue depends on the screen staying active, keep the browser running and prevent the phone, tablet or computer from going to sleep before 10:41 pm. If the browser closes or the device sleeps, the curtains may remain open because the alarm will not sound. Check the volume beforehand and keep the device close enough to hear over the television or other evening noise.
Once the curtains are drawn, use the remaining part of the evening as a defined gap before your next task that day. Nineteen minutes remain until 11:00 pm, enough for a small job such as putting away mugs, preparing clothes for morning or checking that doors are locked. Choosing one contained task helps prevent a brief pause from turning into a much later finish.
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 10:41 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.
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