How to use the online alarm clock
While you wait to close the greenhouse before the evening temperature drops, set the alarm for 6:34 pm and keep an eye on the remaining daylight. The alert gives you a definite moment to stop another job and secure the doors and vents, rather than letting the task drift towards 7:00 pm.
Because the greenhouse reminder needs to be heard, check the sound setting before leaving the browser running. Silent mode may suppress the alert even when the alarm reaches 6:34 pm, so a quick test at a low volume can confirm what you will hear. Keep the browser active and the phone or computer awake: otherwise the greenhouse alarm may not sound, leaving you without the signal you were waiting for.
If you need to travel to the greenhouse, work backwards from 6:34 pm using a realistic late-afternoon journey time. British roads can stay busy around the evening commute, and a familiar route may take longer than it does earlier in the day. Allow a small buffer for traffic, parking and walking from the gate, so the alarm marks the closing task itself rather than the moment to set off.
Common questions
What happens if my laptop goes to sleep before 6:34 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.
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
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.
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