Discover the incredible: astronomy and the fascinating Egyptian culture

Mathematics and astronomy were two important areas of study in ancient Egypt and were closely linked. The Egyptians used mathematics to make astronomical calculations and developed calendars based on the movement of celestial bodies.
The ancient Egyptians observed the night sky and developed a system of constellations that helped identify the stars and planets. They were also able to measure the sun's position in the sky, using a device called a merkhet, which allowed them to measure angles with great precision.
Mathematics also played an important role in the creation of the Egyptian calendar. The Egyptians developed a 365-day solar calendar, divided into twelve months of thirty days each and an additional period of five days at the end of the year. They used mathematical calculations to ensure that the calendar was in sync with the movement of the sun.
How did mathematical calculations allow the ancient Egyptians to create an accurate calendar based on the movement of the sun?