Skill you are practising: Skill builder: A.M. or P.M.

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A bit more on AM and PM

The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods:
A.M. (from Latin ante meridiem, translates to, before midday) and
P.M. (from Latin post meridiem translates to, past midday).

Each period consists of 12 hours numbered: 12 (acting as zero), and then 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11.

The 24 hour/day cycle starts at 12 midnight (and is indicated as 12 a.m.), runs through 12 noon (and is indicated as 12 p.m.), and continues to the midnight at the end of the day.


Clock system
12-hour 24-hour
Midnight (start of day)
12 midnight
12:00 a.m.
00:00
12:01 a.m. 00:01
  1:00 a.m. 01:00
11:00 a.m. 11:00
11:59 a.m. 11:59
Noon
12 noon
12:00 p.m.
12:00
12:01 p.m. 12:01
  1:00 p.m. 13:00
11:00 p.m. 23:00
11:59 p.m. 23:59
Midnight (end of day)
shown as start of next day
24:00