How Did Ancient Civilizations Track Time Without Clocks?

Imagine a giant sundial in the sky. That’s how ancient people tracked time, using the sun, moon, and stars! They noticed that the sun moved across the sky every day, so they could tell when it was morning or night. When the moon changed shapes, they knew weeks were passing by. And when certain stars came out at the same time each year, they knew a whole year had gone by. It was like having a giant clock made of nature!