Wards, depots and control rooms all keep running through the small hours, and the people on those rotas watch the clock differently from everyone else. If a handover, a break or the end of the shift falls at 12:22 am, this page gives the exact gap left to it, recalculating every second instead of leaving you to do sums on four hours of sleep.
The figure on this page comes from your own device's clock, checked continuously and recalculated every second against 12:22 am. There is nothing to press and nothing to set up first — the count is already running by the time the page has finished loading, and it keeps going while you are looking at it.
Writing a time as 12:22 am keeps the am or pm attached, which reads naturally in a sentence but is easy to skim past in a long list of similar entries. Writing it as 00:22 is less conversational and considerably harder to misread, which is why schedules and rotas lean that way.
Common questions
What is 00:22 in the 12-hour clock?
That is 12:22 am, or twenty-two minutes past twelve at night if you are saying it aloud. From 13:00 onwards, subtracting twelve gives the pm figure — the same moment written three different ways.
Does the number update by itself?
Yes. It recalculates every second from your device's clock, so there is nothing to refresh or restart. Whatever is on screen is the current gap to the target time, not a figure worked out when the page first loaded.
What happens if 12:22 am has already gone for today?
The count simply carries on towards the next occurrence, which is tomorrow. That rollover happens on its own — the page does not need reloading and there is nothing to reset by hand.
Which clock does it use?
Your own. It reads the local time and time zone from the device you are looking at, so the figure reflects where you actually are rather than a fixed zone written into the page.
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