Is the Zodiac based on beginning of spring or Spring Festival? How to calculate the Spring Festival in the perpetual calendar?

Different opinions about the zodiac and the beginning of a year

Beginning of spring is one of the 24 solar terms. Beginning of spring is the first of the twenty-four solar terms, and it was included in the first month solar terms in the official yearbook of Ming and Qing Dynasties. The arrival time is on February 3-5 of the Gregorian calendar every year (around the first day of the first lunar month), when the sun reaches 3 15.

Beginning of spring is one of the important traditional festivals of the Han nationality. "Li" means "start". Since the Qin Dynasty, China has always regarded beginning of spring as the beginning of spring. Beginning of spring is divided from astronomy, with spring flowers and flowers; Spring is growth, cultivation and sowing. The period from the beginning of the Spring Festival to the long summer is called spring.

The zodiac is not bounded by the New Year, but by beginning of spring.

Beginning of spring was once called "Spring Festival", but in the early years of the Republic of China, beginning of spring was robbed of the title of "Spring Festival" by the Lunar New Year. This does not mean that the beginning of spring is a new year. Everyone who has read history books knows this common sense, but some people who don't understand it misinterpret it. It turns out that beginning of spring is the new year. The real new year has always been the first day of the New Year. However, the Zodiac does not take the New Year as the boundary, but takes beginning of spring as the boundary, because beginning of spring is the first day of each year in the heavenly stems and earthly branches calendar of the lunar calendar, which is the day when the main branch enters the next year, and the Zodiac is only the agent of the twelve branches.

Before the start of the new spring, the zodiac is still the zodiac of the previous year. According to the previous genus. Only after beginning of spring will the new year begin. The zodiac reflects a concept of time. The management time of each zodiac is average, that is, the time for the earth to make a circle around the sun, with a period of twelve years.

The correct calculation of ecliptic time should start from the moment of handover to beginning of spring and end before handover to beginning of spring in the following year. For example, children born after 0: 52 on February 4th, 2009 (beginning of spring in 2009) and before 6: 42 on February 4th, 20 10 (beginning of spring in 20 10) belong to cattle.

Zodiac is not divided by solar calendar, nor by lunar calendar, but by festivals. Dividing by season is the most accurate, because every month's solar terms will be adjusted in time according to the position of the earth.