How to use the online alarm clock
Before handing over the shift, pass the night engineering works timetable to your colleague and set an alarm for 11:11 pm as the final prompt to check it together. That leaves a clear moment to confirm affected Underground lines, planned closures and the next person’s responsibilities before 12:00 am.
During the handover, sound may quietly route to headphones that are still paired, so test the alarm at a low volume and check the selected audio output. Keep the browser active while the timetable is being reviewed: if the page is closed or the computer goes to sleep, the alarm cannot sound, and the engineering works check could be missed. Leaving the headphones where both colleagues can hear the test also prevents a private alert from passing unnoticed.
A late engineering handover can feel warmer than expected after travelling or working near equipment, even at 11:11 pm. If the air conditioning is running, choose a seat away from its direct draught so the timetable papers stay put and conversation remains easy to hear. Keep a light layer nearby for a cool control room, and place water away from keyboards and printed closure notes while the final details are checked.
Common questions
What happens if my laptop goes to sleep before 11:11 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.
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.
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