How to use the online alarm clock
Preparing early for security before the ferry from Dover gives you room to check passports, tickets and the route into the port without rushing. Set the alarm for 8:01 am while those details are still in front of you. That leaves the rest of the hour available for packing the car and getting everyone ready, with 9:00 am as a clear point for your next check.
Your Dover preparations may involve moving between booking details, maps and messages, so keep the alarm page open once it is running. If you close its tab or browser, the alarm cannot sound, and your ferry security timing could slip unnoticed. The same risk applies if the phone or laptop goes to sleep. Leave the page visible, keep the device awake and turn the sound high enough to hear over conversation or luggage being moved.
Before setting off at this early hour, consider how the car will feel while you wait near the port. On a warm morning, run the air conditioning briefly before passengers settle in rather than leaving it until the cabin is stuffy. Keep a light layer within reach as well: cool air inside the car can feel sharp after standing outside during the Dover security checks.
Common questions
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.
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.
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