When are beginning of spring, Changsha, beginning of autumn and beginning of winter? Brief introduction of beginning of spring, Changsha, beginning of autumn and beginning of winter.

1, beginning of spring: one of the 24 solar terms. The solar term that begins in spring. On February 4th or 5th every year, when the sun reaches 3 15 degrees, it is beginning of spring.

2. Long summer: On May 5 or 6 every year, the solar term "Long summer" is when the sun reaches 45 degrees of the yellow longitude.

3. beginning of autumn: On August 7th or 8th every year, when the sun reaches longitude 135, it is regarded as beginning of autumn.

4. beginning of winter: The sun is located at 225 degrees of the yellow meridian, and the intersection point is165438+1October 7-8.

5. beginning of spring, Changxia, beginning of autumn and beginning of winter, these four solar terms are collectively called "Li Si". According to the method of dividing seasons in ancient Chinese astronomy, four seasons are the beginning, with independent spring to long summer as spring, long summer to beginning of autumn as summer, beginning of autumn to beginning of winter as autumn, and winter solstice to beginning of spring as winter.