How to use the online alarm clock
Getting ready early for a local theatre performance is easier when 10:45 pm has a clear purpose. Set the alarm while checking your ticket, laying out a coat or arranging the journey home. The alert leaves a useful quarter-hour before 11:00 pm, so preparations can be finished without repeatedly watching the clock.
Keep the alarm page visible while completing those preparations, and check that the sound level is high enough to hear from across the room. A browser may reduce activity on a page left in the background, so avoid switching to several demanding apps and confirm the countdown is still moving when you return. Closing the page or letting the phone or laptop sleep may silence the theatre reminder entirely; use the device’s built-in alarm as a backup if missing it would disrupt your plans.
Late-evening theatre plans can run close to the final practical tasks of the day, especially when public transport is less frequent. Treat 10:45 pm as a buffer before whatever follows: allow time to collect keys, find a travel card and check the last train or bus. If the performance has already ended, that same margin can cover leaving the venue, saying goodbye and starting the journey before 11:00 pm rather than filling every available minute.
Common questions
What happens if my laptop goes to sleep before 10:45 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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