How to use the online alarm clock
Getting ready well ahead of the Proms at the Royal Albert Hall, you can set the alarm for 11:35 pm now and leave the rest of your evening undisturbed. That gives you a clear prompt before 12:00 am, whether it marks the moment to collect your ticket, check the journey or head towards the entrance.
Your plans for the Proms depend on the alarm still being active when 11:35 pm arrives, so keep this browser page running and prevent your phone or computer from going to sleep. If either is shut down beforehand, the alert may stay silent and leave you late for the start at the Albert Hall. Set the volume to an audible level, then use the displayed alarm status to confirm that the time has been registered.
Late preparations for the Albert Hall are easier when the room does not already feel like bedtime. Before settling down, leave a lamp on or arrange a light to come on near 11:35 pm; a dim screen across a dark room is easy to overlook. Keep the light gentle enough for the evening, but place it where it helps you notice the alarm and gather what you need before midnight.
Common questions
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.
Does the alarm still work if I close the tab?
No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.
What happens if my laptop goes to sleep before 11:35 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.
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