How did Egyptians calculate an record time?

The ancient Egyptians calculated and recorded time using a combination of sundials and water clocks, known as clepsydras. They divided the day into 12 hours of daylight and 12 hours of nighttime, with the length of hours varying according to the season. The Egyptians also used a calendar system based on the lunar and solar cycles, which included 12 months of 30 days each, plus an additional five days at the end of the year. This system allowed them to track time for agricultural, religious, and civic purposes.