The hour after the flat finally goes quiet is the one most people would keep if they could, and it is also the one that vanishes without being noticed. Giving it an end at 10:30 pm and watching the figure fall is a fairer account of it than looking up later and doing the subtraction.
The clock it uses is your own — whatever local time and zone the device is set to. In the Emirates that means Gulf Standard Time, four hours ahead of UTC, year in and year out. Travel with the same laptop and the count follows the new local time once the machine has picked it up.
Plenty of phones and dashboards default to a 24-hour display regardless of how people around them actually speak, so 22:30 may well be the figure staring back at you while 10:30 pm is what anyone would say out loud. Neither form is more correct; they are just aimed at different readers.
Common questions
What is 22:30 on a 12-hour clock?
The same instant is 10:30 pm in writing and half past ten at night out loud. Anything from 13:00 onwards loses twelve to give the pm figure, which is the only sum involved in moving between the two.
Does the number update by itself?
Yes. It is recalculated every second from your device's clock, so nothing needs refreshing or restarting. Whatever is on screen is the current gap to 10:30 pm, not a figure worked out when the page first opened.
What happens once 10:30 pm has passed for today?
The count rolls over and carries on towards the same time tomorrow. That happens on its own at the moment the time passes — the page does not need reloading and there is nothing to reset by hand.
Which clock does the countdown use?
Your own. It reads the local time and time zone from the device in front of you, which in the Emirates means Gulf Standard Time, UTC+4. Travel and the count follows whatever the device picks up.
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