What is the origin of the construct of time?
When did people begin keeping track of time and why?
Probably started with the seasons, planting seeds, hunting animals for food.
Time existed way before the creation of the universe. However, devices that are used to tell time were made later on. The Egyptians are credited with coming up with the first device of measuring time and the modern calendar in the year 1500 BC.
probably to check how long they were living.
There was nothing else to do at the time.
God started it. In Genesis... The original word for day was YOM. (Evening and morning was the first DAY!)The Hebrew word for day is YOM.As in Yom Kippur(day of atonement).