1580s BC

The Egyptians invented a new and better calendar. It is based on both the moon and a star. They observed the annual appearance of the brightest star in the sky, Sirius. This calendar was more advanced than the Babylonian calendar.

1580s BC

The Egyptians invented a new and better calendar. It is based on both the moon and a star. They observed the annual appearance of the brightest star in the sky, Sirius. This calendar was more advanced than the Babylonian calendar.