How to use the online alarm clock
Breaking away from what you are doing to check the river after an evening downpour is easier when 10:11 pm has a clear reminder attached to it. The alarm marks the moment to pause, take a torch and make the check while the details are still visible, rather than letting the task drift towards 11:00 pm. You can finish the immediate job in front of you without repeatedly watching the clock.
Your river check depends on hearing the signal, so play a test alert now at the same volume and through the same speaker you expect to use later. This reveals muted sound, an unsuitable tone or audio being sent somewhere unexpected before the reminder matters. If you close this page or let the device sleep, no alarm will sound, so the river-level check may be missed. Leave the alarm running in an active browser and use a separate backup if missing the check would cause a problem.
Returning from a river check at 10:11 pm can disturb people who have already settled for the evening. Put your torch, coat and keys together beforehand, and choose an alert loud enough for you without carrying through the whole house. Silencing it promptly also keeps the reminder from waking anyone after you have started moving.
Common questions
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 10:11 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.
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