How to use the online alarm clock
As you finish what you’re doing and leave for the start of the Proms at the Royal Albert Hall, an 11:34 pm alarm gives the evening a firm departure point. It is late enough that small delays can easily blur together, while 12:00 am is close enough to tempt you into waiting. Treat the alarm as the moment to go.
Build the Proms reminder around the journey rather than assuming the browser will keep watch regardless of what happens to your screen. If you close this page or the phone or laptop falls asleep before 11:34 pm, the Proms alarm will not sound, so there may be no cue to leave. Keep the page open, keep the device awake and leave the sound audible while you finish.
A departure this late can push everything after the concert further into the night, so the remaining sleep is easier to protect when the return is prepared in advance. Keys, travel card, charger and anything needed for the morning can be placed together before 11:34 pm. On getting home, having those decisions already made leaves less to sort out before bed and makes the post-Proms routine shorter.
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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