How to use the online alarm clock
Waking at 9:03 pm, you need a moment to remember that an Army Cadets collection is still ahead. Set the alarm now, before settling back under the duvet or drifting into anything else. There are 57 minutes until 10:00 pm, enough time to get properly awake, check where the club pickup point is and gather your keys without turning the evening into a rush.
Because you have only just woken, choose a device that will remain awake until the alarm sounds, then set the volume high enough to notice from another room. A browser alarm cannot alert you once its page is no longer running or the device has gone to sleep, which could leave your cadet waiting after the session. Keep this screen active and use a separate phone alarm as a fallback if the pickup cannot be missed.
Before leaving for the Army Cadets club this evening, check how warm the car feels after standing through the day. Run the air conditioning briefly while you put on shoes and collect what you need, rather than sitting in a stuffy cabin at departure time. At 9:03 pm the outdoor heat may be easing, but a parked car can still hold warmth; a bottle of water in the car is also practical for the return journey.
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 9:03 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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