When is the rotation of the zodiac?

The rotation point of the ecliptic is the beginning of spring! But for the convenience of calculation, it is generally considered as the Spring Festival!

This question is actually trying to figure out what is the basis of the zodiac. The basis of the zodiac is the chronology of the branches. The zodiac corresponds to the twelve earthly branches. Corresponding to the ugly mouse, cow, tiger and rabbit. For example, the Year of the Rat is the Year of the Rat, Shen Nian is the Year of the Monkey, the fourth year is year of the snake, and the second year is the Year of the Loong. This is clear, and the answer is clear. The zodiac is divided according to which day of the year. This is beyond dispute. The dividing line between the dry and dry years is beginning of spring! In the lunar calendar, many people think that the beginning of a year is the Spring Festival. Actually, it was a misunderstanding. This is misled by the beginning of the new year on the Gregorian calendar 1+0. The Lunar New Year should begin in spring. The time constellation is also calculated in this way. Like February 4th, 20 13, it must be your company's fourth year (year of the snake). Anyone who knows a little about the lunar calendar or fortune-telling art will say so. Or you can definitely get a clear answer by looking up the perpetual calendar.

To understand this problem, we have to start with our calendar. The lunar calendar in our country is the lunar calendar. Is to consider the movement of the sun and the moon at the same time. Among them, 24 solar terms return completely according to the sun. Therefore, the solar calendar date of each solar term is basically certain, while the lunar calendar date is far apart. Every month of the lunar calendar is based on the moon's profit and loss. The new moon is always on the first day. The beginning of a year is the beginning of spring. When we say "Xu Bing Year" and "Ding Hai Year", we should start from beginning of spring. But beginning of spring has nothing to do with the moon phase. The lunar month must start from the first day, that is, from the new moon. Therefore, the new moon closest to beginning of spring is considered as the first day of the first month, that is, the Spring Festival. So the Spring Festival is only the first day of the first month. Not the beginning of a year.

This is completely different from the Gregorian calendar.