How to use the online alarm clock
Break away from what you are doing at 9:01 am and get your dog ready for a walk across Hampstead Heath. The alarm marks a clear stopping point, leaving the rest of the morning available rather than letting the outing drift towards 10:00 am. Lead, bags and a light layer can be gathered beforehand, so the sound means it is time to leave rather than time to start searching.
Your Hampstead Heath departure may suit a gentle tone if the room is quiet and you are already watching the clock. A more persistent sound makes sense when household noise or a task could hold your attention. Choose something distinct from ordinary notifications, then set the volume high enough to notice without making it unnecessarily jarring. If the browser is no longer active or the phone falls asleep, the alarm for the dog walk will not sound, so another alarm is sensible when the departure cannot slip.
Before heading out into the London morning, keep the display easy on your eyes while checking the alarm. At 9:01 am, daylight may already be strong near a window even when the screen still looks dim indoors. Match its brightness to the room, avoid holding it against the glare, and put it down once the time is confirmed. That reduces needless screen checking while you finish preparing for the walk.
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 9:01 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.
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