How to use the online alarm clock
Finish what you are doing, then leave with an alarm set for 1:24 pm so you can check the departure board before your intercity train. That gives you a clear stopping point rather than letting the final task drift towards 2:00 pm. Keep your ticket or booking reference ready, as the displayed platform may matter as much as the departure time.
Because your departure-board check depends on hearing the alert, keep the browser alarm active while you wrap up. Set the sound loud enough to carry across the room, then confirm that your phone or laptop is not due to enter sleep mode first. If the device sleeps or the browser session ends, the departure board check may receive no audible reminder, leaving you to notice the time yourself.
Leaving around midday can put this journey close to lunch, errands and other plans later the same day. Use the 36 minutes before 2:00 pm as a boundary for getting to the station, reading the board and finding the platform, while preserving a little spare time for whatever follows. A quick note of that next commitment can help you decide whether to pick up food now or wait until the journey is under way.
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 1:24 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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