o'clock

Hello,

I have two questions:

  1. What’s the comma above the word [O’]==>O’clock?

  2. Suppose that the time is 2:00P.M.===> It’s two o’clock. Can I omit the word “o’clock”? I mean can I just say “It’s two”? (without "o’clock)

Thank you

  1. It is an apostrophe, used to form a contraction. - the entire phrase was “of the clock”.

  2. Yes, it’s two, it’s two pm, or it’s two o’clock are all fine.

Understood. Thank you.