Why do we say “four o’clock”? What does the
“o” mean? The “o” is a contraction or
abbreviation of “four of the clock”. “O” ‘clock
is an abbreviation of “of the” clock.
In times past clocks were relatively rare.
Most people told time by some reference to
the position of the sun or moon.
The times provided by these two bodies do
not always concur with those provided by a
clock. Hence there was a need to
differentiate between the time provided “of
the clock” (o’clock) and the time used by the
vast majority of people in a given locality.
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