12-Hour Clock

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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, translating to before midday) and p.m. (from Latin post meridiem translating to after midday). Each period consists of 12 hours numbered: 12 (acting as zero), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11. The 24 hour/day cycle starts at 12 midnight (usually indicated as 12 a.m.), runs through 12 noon (usually indicated as 12 p.m.), and continues just before midnight at the end of the day. The 12-hour clock was developed from the middle of the second millennium BC to the 16th century AD. The 12-hour time convention is common in several English-speaking nations and former British colonies, as well as a few other countries.
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Ante meridiem
Post meridiem
12 hour clock
Ante Meridiem
Post Meridiem
12-hour notation
12:00 AM
12h
12-hour clocks
12 hour clocks
Ante Meridium
Twelve-hour clock
12:00 PM
12:00 A.M.
12:00 P.M.
12 PM
12 P.M.
O'clock
Twelve hour clock
12-Hour Notation
12 am
12-hour
12pm
AM and PM
O clock
Meridiem
12am
12 hour time
12 pm
12 A.M.
12 A.M
12 P.M
Post Meridiam
Ante Meridiam
12 Hour Clocks
12 Hour Clock
6 o'clock
3 o'clock
8 o'clock
10 o'clock
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