What calendar did ancient Egypt use?

Ancient Egypt used the ancient Egyptian calendar.

1, ancient Egypt has a long history, and the calendar has been changed several times, and different schools have different opinions.

2. Calendars in ancient Egypt include lunar calendar and quasi-lunar calendar. Generally speaking, every year is divided into three seasons: flood season, grain growing season and harvest season. At the same time, 365 days are 1 year, 1 year,1February, 30 days per month, and 5 days at the end of the year are festivals. Only less than the current solar calendar 1/4 days. Julian calendar in ancient Rome was revised on this basis.

Extended data:

Contents of ancient Egyptian calendar

1, fixed for 30 days every month, and there is no difference between big and small months. There are three seasons and four months in a year, so there are only 360 days in name. But every year, five days are added before the new year, which is called EpagomenalDays. During these five days, they will hold a ceremony to celebrate the New Year. In this way, the actual interval between two New Years is 365 days.

The ancient Egyptians did not have the concept of leap year. It takes 365.25 days for the earth to make a revolution around the sun. Without leap years, the calendar would be one day earlier than the actual astronomical phenomena (such as Sirius rising before dawn) four years later. 1460 years later, it will be a whole year earlier (and it will be consistent with the actual astronomical phenomena). This year 1460, the ancient Egyptians called it the Tiangou cycle, and "Tiangou" was Sirius in the eyes of the Egyptians.

References:

Baidu Encyclopedia-Ancient Egyptian Calendar