o'clock means of the clock.
"o'clock" means "of the clock"
it meas the clock hand it meas the clock hand it meas the clock hand
From Midnight 12 o clock is AM
means ten minutes till ten o clock, which is 9:50
midnight
"POST MERIDIAN" means after noon that is 12 o clock mid day to 12 o clock mid night so half day and half night
Timing is mentioned as 'o' clock because it is according to the clock.
o' clock
10 o clock
Place a watch or wall clock on your palm. every hour represents the exact corner where the hour hand is pointing to. Ex: 12 o clock means straight ahead of you. Anything to your right hand side is 3 o clock. 9 o clock is left hand side. Anything behind you is 6 o clock. If you keep practicing, you can also give the in between positions of something like 7 o clock or 2 o clock without looking at the clock on your palm. This method is vastly used by almost all the military forces around the world. you can see the implementations in military films where they are pointing to an enemy or unknown contact position by o clocks from his/her position. You are in the center and anything around you is o clock. Your computer is in 12 o clock position right now and if the door is behind you then it's 6 o clock. Try it. It's fun.
of the clock