How to use the online alarm clock
You are watching the final moments before meeting an excursion boat at the canal lock, ready to move as soon as the appointed time arrives. Set the alarm for 12:59 pm so your attention can rest briefly without losing track of the rendezvous. With 1:00 pm immediately afterwards, there is only enough time to check your belongings and look towards the landing point.
Before relying on the alert for the boat’s arrival, test the sound while you are still waiting nearby. A quick trial confirms that the volume is audible above conversation, water and passing traffic, and shows whether the chosen tone is easy to recognise. If you close the page or allow the phone to sleep, the alarm may stay silent and leave you missing the excursion boat at the lock, so keep the clock visible and the phone awake until it rings.
A midday alert can be heard by everyone sharing the house, especially if an open window faces the towpath or you are waiting indoors before walking out. Choose a clear but moderate volume, tell anyone nearby why it will sound at 12:59 pm, and keep the phone close to you. That prevents a sudden alarm from startling someone in another room while still giving you a distinct cue to head for the lock.
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 12:59 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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