Also, what is the contraction o'clock stand for?
An apostrophe is used in o'clock because the word is a contraction of the phrase "of the clock." Just like other contractions, the apostrophe takes the place of missing words or letters from a longer word or phrase.
Similarly, why do we say 7 o clock? The practice of saying “o'clock†is simply a remnant of simpler times when clocks weren't very prevalent and people told time by a variety of means, depending on where they were and what references were available.
Also to know, what does o'clock actually mean?
o'clock. / (əˈklɒk) / adverb. used after a number from one to twelve to indicate the hour of the day or night. used after a number to indicate direction or position relative to the observer, twelve o'clock being directly ahead or overhead and other positions being obtained by comparisons with a clock face.
What is meant by 2 o clock?
The start of the third hour of the day in both the 12-hour and the 24-hour clock; 2:00.