Has the zodiac changed after New Year's Day?

After New Year's Day, it is not a new Chinese zodiac. The Chinese zodiac is based on beginning of spring.

The zodiac is based on beginning of spring. This method began in Shang and Zhou Dynasties. From Shang and Zhou Dynasties to the end of Qing Dynasty, beginning of spring was a year-long ceremony. China's traditional zodiac signs, twenty-four solar terms, lunar calendar, traditional eight-character numerology and foreknowledge all started from the solar terms in beginning of spring.

The zodiac marks the next year according to the orbit of Jupiter's old star relative to the sun. It must be that the star moves to a very precise angle and a specific point and begins to enter a zodiac sign.

Once stars move from one angle to the next, they belong to another zodiac and are divided into the next year. Therefore, the division of the zodiac must be very accurate. This time is accurate to the second. Before this second, it was the zodiac, and after this second, it was the new zodiac, which is the new year.

What does the zodiac depend on? ?

The zodiac is determined according to the age star. Jupiter runs once every twelve years, and the annual branching order can be determined from Jupiter's position. Yu Han, Fang Shan and Ji Shu thought that every twelve years, "three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old and three years old".