How to use the online alarm clock
You have just woken up, and meeting the Caledonian Sleeper at Euston is still only a plan rather than something you have started. Set the alarm for 9:16 pm before checking the route, getting dressed or gathering what you need for the station. That leaves the rest of the evening clearly divided, with 10:00 pm as a useful later reference point rather than a deadline you must keep calculating.
Your computer may return to sleep while you are preparing to meet the train, so keep it awake and leave this browser page open; otherwise the 9:16 pm alarm will not sound. Check that the volume is audible now, then use the displayed alarm time as confirmation that the setting has registered. If another person is sleeping nearby, choose a level you can hear without making the room unnecessarily noisy.
Heading towards Euston after waking can feel abrupt on a warm evening, especially if air conditioning has made the room much cooler than the street or Tube. Put a light layer beside your keys and take a moment to adjust before leaving. At 9:16 pm, lingering heat can still make a rushed walk uncomfortable, while strongly cooled carriages may feel chilly once you stop moving.
Common questions
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.
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.
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