How to use the online alarm clock
You're halfway through an evening job when 6:31 pm arrives, so stopping to close the greenhouse can feel awkward while tools and trays are still out. An alarm at this exact time gives the task a firm break point rather than leaving it until the air turns colder. With 7:00 pm approaching, there is still time to secure vents, doors and anything loose.
Noise from a fan, radio or work in the garden can cover a browser alarm, especially if the phone is in a pocket or left indoors. Choose a volume you can hear from beside the greenhouse, then make a brief test before relying on it. The alarm may remain silent if its browser is no longer running or the computer goes to sleep, which could leave the greenhouse unclosed as temperatures fall.
Coming back from the greenhouse at this point in the afternoon often means moving between fading daylight and a brighter screen. Lower the display brightness enough that text remains clear, and use a warmer colour setting if it is already available. A quick glance at 6:31 pm should be sufficient; avoid keeping the screen close to your face while waiting for the signal.
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 6:31 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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