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In the 24-hour time notation, the day begins at midnight, 00:00 or 0:00, and the last minute of the day begins at 23:59. Where convenient, the notation 24:00 may also be used to refer to midnight at the end of a given date [3] — that is, 24:00 of one day is the same time as 00:00 of the following day.
In these cases, exact and unambiguous communication of time is critical. If someone mistakes 5:00 AM for 5:00 PM in a hospital for example, when medication or other medical treatment is needed at a certain time, the outcome could be dire. Thus 24-hour time (5:00 PM written as 17:00) is used.
Instead of going back to 1 after 12:59 (PM), you move on to 13:00. And the hour just after midnight is different too so there’s no double-12. From midnight (12:00 AM) until 12:59 AM, swap the 12 ...
In spoken English, full hours are often represented by the numbered hour followed by o'clock (10:00 as ten o'clock, 2:00 as two o'clock). This may be followed by the "a.m." or "p.m." designator, though some phrases such as in the morning, in the afternoon, in the evening, or at night more commonly follow analog-style terms such as o'clock, half ...
The Roman and Western European medieval monastic day began at 6:00 a.m. (06:00) at the equinox by modern timekeeping, so the ninth hour started at what is now 3:00 p.m. (15:00) at the equinox. [ citation needed ] In English, the meaning of the word shifted to midday and the time gradually moved back to 12:00 local time – that is, not taking ...
The Welsh language usage of the 12-hour and 24-hour clocks is similar to that of UK English above. [citation needed] However, the 24-hour notation has only a written, not a spoken form. For example, written 9:00 and 21:00 (or 09.00, etc.) are said (naw o'r gloch, literally 'nine of the bell').
A study of motor accidents in Sweden between 1987 and 1991 found that the time around 5:00 pm had by far the most accidents: around 1,600 at 5:00 pm, compared to around 1,000 each at 4:00 pm and 6:00 pm. This trend may have been influenced by the afternoon rush hour, but the morning rush hour showed a much smaller increase. [16]
Common business is done from Monday to Friday, but major shops are usually open on Saturdays 9:00am – 6:00pm and on Sundays 12:00pm – 9:00pm, with exceptions. In Mexico, the standard business hours are from 7 am to 2 pm and 4 pm to 6 pm. (At least in Mexico City most offices open between 8 and 10 am and close around 6 or 7 pm.