How to use the online alarm clock
Handing the King’s Cross train pick-up to someone else at 1:17 pm means giving them a clear moment to set off, not just passing on a platform number. Set the alarm for the agreed departure time and tell them what it marks, leaving enough room for the Underground, a bus connection or the walk into the station. With 2:00 pm approaching, the alert can separate a calm handover from a last-minute dash across the concourse.
Before relying on the alert for the King’s Cross train, test its sound while there is still time to correct the volume. A short trial confirms that the browser has permission to play audio and that the chosen signal is noticeable. Keep the browser session active and the computer awake: once that session ends or the computer sleeps, the alarm cannot sound, which could leave the train without anyone waiting at the station. After testing, reset the intended time carefully.
King’s Cross can be noisy around midday, with announcements, rolling luggage and nearby conversations masking a familiar alert. Place the computer close to the person taking over and choose a distinct sound rather than relying on volume alone. As 1:17 pm moves towards the afternoon peak, changing background noise can make a signal that seemed obvious earlier much easier to miss.
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 1:17 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.
Cookie policy