What are the four solar terms in summer?

Time: May 5 ~ 6.

Sun position: longitude 45 degrees.

Phenological characteristics: When hot weather comes, everything grows rapidly and prospers. Farming activities have also entered the peak season.

Naming reason: indicates the beginning of summer.

Solar terms: Xiao Man

Time: May 20th ~ 22nd.

Sun position: longitude of the Yellow River is 60 degrees.

Phenological characteristics: the temperature continues to rise, precipitation increases, and everything grows rapidly.

The reason for the name: "full", full, the seeds of summer crops such as wheat are gradually full, but not mature.

Solar term: awn species

Time: June 5 ~ 7,

Sun position: longitude 75 degrees.

Phenological characteristics: the temperature continues to rise, precipitation increases, and everything grows rapidly.

Reason for its name: "Mang" refers to the fine hairs on the tip of the shell. In the north, it is the time to cut wheat and plant rice, which is the busy season of agriculture. Harvest in summer, manage in summer, and sow in summer in time.

Solar terms: summer solstice

Time: June 20 ~ 22,

Position of the sun: 90 degrees of the yellow meridian.

Phenological characteristics: On this day, the day is the longest and the night is the shortest in the northern hemisphere, which indicates that summer is coming and the temperature will continue to rise.

The reason for the name: the sun shines directly on the Tropic of Cancer, and there is a scene of "the sun arrives in the north, the day is long and the shadow is short", so it is called "the summer solstice".