How to distinguish beginning of winter and beginning of spring from Japan?

There are two reasons to calculate the beginning of the winter solstice. One is to calculate the calendar of China, taking the winter solstice as the era. The calculation and arrangement of calendar days every year always calculate the winter solstice first, and then push the rest. Therefore, the China calendar starts from the winter solstice. Another reason is that the winter solstice is the first month of Zhou Zheng, which often appears on the first day of the first month of Zhou Zheng.

Although beginning of spring was once called the Spring Festival, the customs and activities in beginning of spring, such as playing with spring and biting spring, have their own origins and will never be confused with the New Year. It has been clearly distinguished in Hanshu: "The first month is the new moon, and the year begins; The beginning of spring, the first season of the four seasons. " The first day of the first month is the beginning of a year, and beginning of spring is the beginning of four seasons.

The winter solstice is a traditional festival in China, and it is the 22nd of the 24 solar terms. The longitude of the sun reaches 270 degrees, and it is celebrated every year on the Gregorian calendar 65438+February 2 1-23. Winter solstice, also known as short solstice, winter festival and sub-year-old, has both natural and humanistic connotations. It is an important solar term among the 24 solar terms and a traditional folk festival in China.

The solstice in winter is one of the eight festivals in four seasons, and it is considered as a big holiday in winter. There is an ancient saying that the solstice in winter is as big as a year, so the ancients called it "off-year" or "off-year". The custom of winter solstice varies in content or details due to different regions. In some areas along the southern coast of China, there is a custom of offering sacrifices to ancestors during the winter solstice; In northern China, it is a custom to eat jiaozi from winter to Sunday every year.