How to use the online alarm clock
You are handing responsibility to a colleague who will receive the council tax valuation panel, so the 12:39 pm alarm marks the exact point when the handover becomes theirs. Confirm which papers, names and access details they have before you step away. That leaves enough time to settle any final question before 1:00 pm without making the changeover vague.
The panel handover may continue while this alarm page sits behind another browser page or app, but background activity can behave differently across phones and laptops. Check that the alarm still appears as set after switching away, and return to this page shortly beforehand if the timing matters. If the browser is closed completely or the phone or laptop falls asleep, no alarm will sound, so your colleague may miss the council tax valuation panel.
A 12:39 pm changeover falls when other people in the house may be eating lunch, working nearby or expecting a quiet room. Use a sound that you can hear without startling everyone else, and tell anyone sharing the space why it will ring. If your colleague is elsewhere in the house, agree which person will respond so the midday alert does not leave two people assuming the other has taken over.
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 12:39 pm?
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.
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