Dry calendar algorithm

The chronology of cadres and branches is an independent system, but it is related to solar terms.

The way of dating is nothing more than a, b, c, d and ugly children. A cycle of 60 years, a cycle of 60 days.

The chronology of cadres and branches has little to do with the lunar calendar. The first month of each year begins in early spring. And a year is divided into 24 solar terms, without two solar terms and a dry month. So he has nothing to do with the lunar leap month. During leap months, monthly transactions are usually discharged downward. As long as the solar terms are not chaotic, the months of the dry year will certainly not be chaotic. The number of days in a year is also related to solar terms. Theoretically, a solar term is 15 days, but it is not absolute. Some are 16 days, and some are 14 days, which is about 365 days a year.