How to use the online alarm clock
Break away from what you are doing at 11:54 pm to close the curtains before darkness settles outside. The alarm gives you a clear cue to leave the task in hand, deal with the windows and return without relying on a glance at the clock. With 12:00 am approaching, it also marks a natural stopping point before the new day begins.
For this curtain-closing reminder, choose a sound that suits the room rather than selecting one automatically. A softer tone may be enough if you are reading or working somewhere quiet, while a more persistent sound is useful when a television, conversation or household job could mask the first notes. Set the volume beforehand and leave the alarm ready at 11:54 pm. If the browser page stops running or your phone goes to sleep, no sound will play, so the curtains may remain open.
Once the curtains are closed, notice whether the house has become quieter than it was earlier in the evening. Traffic and voices outside often fade by this hour, but a television, washing machine or late train can still cover a gentle alert. Keep the phone near your current task, with its speaker uncovered, and use a firmer tone if the surrounding noise is likely to continue until midnight.
Common questions
What happens if my laptop goes to sleep before 11:54 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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