How to use the online alarm clock
You are only just waking at 4:11 pm, with boots still off and the national trail route not yet started. Set the alarm as a firm departure cue, then use the time before 5:00 pm to get dressed, fill your water bottle and check the section you hope to finish in daylight. Keeping those preparations brief leaves more of the afternoon for walking rather than searching for kit.
Your route could begin late if the alarm sounds through headphones that you have forgotten are connected. Check the audio output after setting 4:11 pm, and play a test sound at a sensible volume before putting the headphones aside. Keep the alarm page running and the phone awake: if either stops, the browser alarm cannot warn you to begin the route. A separate phone alarm is a sensible fallback when leaving on time matters.
Because the walk starts in the late afternoon, judge the remaining route by likely walking time rather than distance alone. Allow extra minutes for road crossings, steep ground, gates and finding the correct path at junctions. Compare that estimate with the published sunset time for the area, and choose a clear turnaround point that still leaves enough daylight for the return or final approach.
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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