How to use the online alarm clock
Halfway through an evening task, you need a clear interruption that pulls you away in time to attend a lecture at the Royal Society. An alarm set for 10:07 pm marks the moment to stop, gather your things and switch attention from whatever is still unfinished. It also prevents the work from drifting on unnoticed towards 11:00 pm.
While you continue with that task, this alarm page may sit behind another page or window. It should remain available in the background, although browser power-saving rules can sometimes delay activity there. Closing this page or allowing the computer or phone to sleep means the lecture alarm will not sound, so the page and device need to stay active until 10:07 pm. Keeping the sound level audible also avoids an alert appearing silently while your attention is elsewhere.
Heading out to the Royal Society late in the evening can mean moving between a warm room, cooler streets and an air-conditioned venue. If the air conditioning has been running during your task, setting it a little less aggressively before departure can make that change feel less abrupt. A light layer is useful for the journey and for a lecture room that may remain cool even after the outdoor heat has eased.
Common questions
What happens if my laptop goes to sleep before 10:07 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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