eli5 I am wondering how the concept of time was first discovered and how? When did human began using “time” in their activities?

Question

eli5 I am wondering how the concept of time was first discovered and how? When did human began using “time” in their activities?

In: Technology

Answer 1

The passage of time is marked by regularly occurring events in our solar system like the appearance of the sun in the East (a day), the appearance of the full moon, (about a month), the apparent motion of star groups (a year). This awareness constructs a time frame.