Set the timer to 17 hours

00:00:00

How to use the online timer

While you work a lighthouse watch, a seventeen-hour countdown can mark the remaining stretch without pulling your attention from the lantern, weather reports and routine checks. Keep the phone somewhere visible but out of the way, so a quick glance is enough when the watch feels longer than the clock suggests.

During a lighthouse duty, closing the timer tab or browser may stop the countdown or prevent its finishing signal from reaching you. If other work needs the screen, leave the tab open and keep the device powered; note the expected handover time separately as a fallback, especially when poor weather makes each check more absorbing.

Across a long lighthouse watch, wind against the glazing, radio traffic and machinery can mask a quiet finish. Set a clearly audible signal before settling into the shift, then place the device close enough to hear without carrying it through every inspection. A vibration alert can provide a second cue when a waterproof coat or ear protection dulls surrounding sounds.

Common questions

What could make the lighthouse watch shown here finish earlier than expected?

An incoming keeper may arrive ahead of the planned handover, or daylight duties may be completed sooner in settled UK weather. End the countdown when responsibility has formally passed, rather than waiting beside it.

What if the lighthouse watch runs beyond the planned finish?

A delayed relief keeper, rough coastal weather or an unresolved safety check can extend the duty. Restart a shorter countdown for the revised handover time and keep the original expected finish in the shift notes.