Does the vernal equinox belong to spring? How about summer solstice? Are the seasons divided according to the solar calendar or the lunar calendar?

The vernal equinox belongs to spring and the summer solstice belongs to summer. The division of seasons in China is calculated according to the lunar calendar, that is, the lunar calendar.

The vernal equinox is the midpoint of 90 days in spring and one of the 24 solar terms. Every year on the fifth day of the second month of the lunar calendar (the Gregorian calendar is about March 20th -2 1 day), when the sun is located at 0 (vernal equinox) of the yellow longitude.

The summer solstice is also one of 24 solar terms, which falls on June 2 1 or 22 of the Gregorian calendar every year. On the solstice in summer, the direct sunlight on the ground reaches the northernmost point of the year and almost directly reaches the Tropic of Cancer. At this time, the day in the northern hemisphere is the longest, and the farther north it is, the longer it is.

Seasons are several time periods. During these time periods, the geographical landscapes that appear periodically every year are quite different. Different regions have different seasons. For temperate climate, especially in China, a year is divided into four seasons, namely, spring, summer, autumn and winter.