How to use the online alarm clock
You are halfway through the Dover ferry security check when the 8:59 am alarm needs to pull your attention away from passports, bags and instructions. That single minute before 9:00 am is enough to finish the immediate check, gather your documents and notice the alert without losing track of what staff have asked you to do.
Because the alarm must interrupt an activity already under way, its reliability depends on what your phone does while you are occupied. Choose a clear sound, raise the volume above the surrounding terminal noise and check the phone’s power settings before joining the queue. The alarm relies on the browser remaining open and the phone staying awake; otherwise it may stay silent when you need to step away from the ferry security check.
Dover can be bright surprisingly early, especially where daylight reflects from glass, pale walls or parked vehicles near the terminal. At 8:59 am, position the phone where direct light will not wash out the alarm screen, and increase the display brightness beforehand if you expect to rely on the visual alert. Keeping it in a shaded pocket or bag compartment can also make the screen easier to read when the sound catches your attention.
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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