The phrase “o’ clock” originates from “of the clock,” used historically to specify time told by mechanical clocks, which became widespread in the 14th century, replacing sundials and other methods. As ...

O'clock is a way of telling the exact hour on a clock. We say "o'clock" when the minute hand (the long hand) points to the number 12 on the clock. When the minute hand points straight up to 12, it ...

Have you ever said, “It’s 5 o’clock” and paused for a moment, wondering, “What’s with the ‘o’ in o’clock?” Well, you’re not alone. This tiny little letter, that we frequently say without thinking, has ...

We say this word multiple times a day, but what does it really mean? Two linguists took the time to explain the fascinating origin of o'clock. Read on to learn what the o in o’clock stands for and how ...