When we sleep we don`t know what time it is. As we awaken, we check the time. We check with our clocks, which are measuring duration elapsing.
For the rest of the day, we see the correspondence between our clocks and the world`s turning.
If the world did not turn, the apparent time of day would not change. The Sun would stay in the same position in the sky all of the time.
Under that condition, people would be less inclined to believe that time, a real thing, existed. They would be more inclined to believe that time, a real thing, did not exist.
The Earth`s rotational motion is the fundamental physical mechanism causing our confusion about the nature of time.