How is the zodiac calculated? Does this have anything to do with beginning of spring?

Zodiac is calculated according to the beginning of spring. According to the Chinese lunar calendar, which has been used in China, the zodiac should be calculated in beginning of spring. However, with the loss of traditional culture, many people distinguish their zodiac signs by New Year's Day in the solar calendar or the first day of the first lunar month, which is incorrect.

1, lunar algorithm

Taking New Year's Eve as the dividing point, that is, from the beginning of the Lunar New Year (the first day of the first lunar month), the method of calculating the zodiac appeared late, and the earliest record appeared in the Northern Song Dynasty. Now many people agree with this. Folklore experts believe that the zodiac should not be calculated according to the 24 solar terms. After all, the Spring Festival is the beginning of the Lunar New Year, and it is also the beginning of the Lunar New Year, so the zodiac naturally starts from the first day of the first month.

2. Cadre and branch age law

The method of taking beginning of spring as the standard of the zodiac began in Shang and Zhou Dynasties. At present, folklores such as the Huangli calendar, traditional numerology and divination all use "beginning of spring" as the basis for calculating the zodiac.

In ancient China, heavenly stems and earthly branches was also used to record the year, month and day. The expression of the zodiac is unique to the chronology of heavenly stems and earthly branches. There are not only twelve zodiac signs, but also twelve o'clock. This system is different from the lunar calendar. The chronology of the trunk and branch is based on the sun, and heavenly stems and earthly branches alternately starts from beginning of spring every year. For example, the year of the horse is Wu Jianian, and the year of the sheep is B. According to the chronology of trunks and branches, the length of each year is about 365.25 days.