How do people In earlier history able to tell time?

In earlier history, people used natural phenomena to tell time, relying on the position of the sun, moon, and stars. Sundials, which cast shadows based on the sun's position, were common during the day, while water clocks measured time through the flow of water. Additionally, ancient civilizations observed seasonal changes and animal behaviors to mark time, creating calendars based on lunar or solar cycles. These methods provided a practical way to organize daily activities and agricultural practices.