How to use the online alarm clock
Finish what you are doing, gather your coat and ticket, and leave when the 2:48 pm alarm sounds so you can make the castle tour. That gives you a clear departure point rather than another glance at the clock while packing up. With 3:00 pm approaching, the alarm marks the moment to head towards the entrance, allowing a little time for the walk across the grounds or a queue at the gate.
While you check directions or put your phone away, the alarm page may move into the background. Browsers sometimes reduce activity there, so keep the sound switched on, confirm the alarm is still set, and return to the page before departure if you can. Your castle tour has no audible back-up if the browser is closed or the phone falls asleep, so use a separate phone alarm when missing the start would spoil the visit.
As the afternoon visiting period continues, a castle courtyard can still be busy with families, guides and school groups, although the lunchtime bustle may begin to ease by this hour. Choose an alarm tone that will carry over nearby conversation without being unnecessarily harsh, and keep the phone close rather than buried in a bag. If you are already outside, a vibration alert can provide an extra cue amid footsteps, traffic or wind.
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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