Transcription: Calendar. Two calendars mark the passage of time in ancient Egypt. One calendar was civil, the other religious. The civil calendar was based on a star called Soptet, which rose every year just before the flood began. This calendar divided the year into 12 months, just as ours does. Each month was named for festivals that occurred during the month. A month was divided into three 10-day weeks. This uses three 360 days over the course of a year. The remaining five days of the year were celebrated just before the New Year as the birthdays of several gods. The religious calendar was based on the st ...