Online alarm clock for 9:29 am
You are getting ready to record the condition of gates along a public right of way before you need to head out, so setting an alarm for 9:29 am gives the check a firm starting point. Keep your notes, route map and phone together now; that leaves the rest of the morning organised, with 10:00 am as a useful marker for beginning the next part of your plans.
A condition check may take you near traffic, machinery or other steady background noise, so set the alarm volume high enough to remain distinct without being startling. Play a brief test signal from where you expect to leave the phone, then move a few steps away and listen again. The alarm will not sound if its browser page has been closed or the phone or computer has gone to sleep, which could leave the gates unrecorded at the intended time. Keep the page open, keep the device awake and consider a separate backup if timing matters.
Before leaving to inspect the gates this morning, check whether the warmth outside will differ sharply from an air-conditioned room. At 9:29 am, sunlight can already make an exposed path feel much hotter than the indoor temperature suggests, especially during a warm spell. Put water and any sun protection beside your notes beforehand, and avoid placing the device directly under an air-conditioning vent, where its signal may be harder to hear.
Common questions
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.
What happens if my laptop goes to sleep before 9:29 am?
The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.