What is a calendar? What does it have to do with the lunar calendar?

Ganzhi calendar is a kind of calendar, which has a long history in China. The year, month, day and time of the official calendar are different, but it can be said to be complete in the Song Dynasty. It is clearly recorded in the almanac of all dynasties. In fact, the lunar calendar should be called the summer calendar. Since the overthrow of the Qing Dynasty in the Republic of China, it was then called the Summer Calendar. Only after the establishment of People's Republic of China (PRC), the culture XXX changed, and it was changed to this name regardless. The lunar calendar is a way of chronology, that is, the first and fifteenth days of the first lunar month. The days in a month are determined by the phase of the moon, and the year is uncertain. But the dry calendar belongs to the pure solar calendar, and the division of months is determined by the 24 solar terms, by the sun, and has nothing to do with the moon. Branches such as Jia Zi, Yi Chou, etc. In ancient times, documents have existed and been used since the Xia Dynasty in China, full of ancient mystery!