How to use the online alarm clock
You are zipping your bag, checking your ticket and heading out to catch the first train to London. An alarm at 5:55 am gives you a final cue before 6:00 am arrives, so those five minutes can cover your coat, keys and the walk to the door without turning the departure into a last-minute scramble.
As you leave for the station, the alarm can remain in a background tab while you check the platform or journey details elsewhere. Some browsers restrict background activity, particularly when power-saving settings take over, so the signal may be less dependable if the page has been left untouched. If you close this browser page or allow the phone or laptop to sleep, the alarm cannot sound and the first train to London could leave without you. Keeping the page visible for the final minute offers a simple check that it is still running.
A pre-dawn departure can feel surprisingly warm after a night in an air-conditioned bedroom. Placing your coat and travel layers beside the bag lets you step outside at 5:55 am and adjust without returning indoors. If the room has been heavily cooled, switching the air conditioning to a gentler setting before you finish packing also makes the move from indoors to the early morning air less abrupt.
Common questions
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.
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.
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