What season is behind the solar terms? Is it summer behind the scenes?

1, the awn seed is the beginning of the noon month of the trunk calendar; The literal meaning of awn seed is "the wheat with awn is harvested quickly, and the rice with awn can be planted". "The Moon Order is seventy-two waiting for Ji Jie": "The May Festival means that there are awns in the valley." At this time, the middle and lower reaches of the Yangtze River in China will enter the rainy Huangmei season.

2. After planting the awn, it is the summer solstice, that is, summer, and the real summer has arrived.

Solstice is the earliest of the 24 solar terms. In the 7th century BC, the shadow of the sun was measured by civil soil gauge, thus the summer solstice was determined. The annual summer solstice begins on June 2nd1day (or 22nd) and ends on July 7th (or 8th). According to "Zunxian Manuscript", "The sun arrives in the north, the days are long and the shadows are short, so it is called the summer solstice. At best, it is excellent. "

On the day of summer solstice, the sun directly reaches the northernmost part of the year, almost directly to the Tropic of Cancer (23 26' north latitude), and the daytime in the northern hemisphere is the longest, and the farther north it is, the longer it is. For example, the daily length of Haikou in Hainan is a little more than 13 hours, Hangzhou is 14 hours, Beijing is about 15 hours, and Mohe in Heilongjiang can reach 17 hours.

5. From summer to the future, the position where the sun directly touches the ground gradually moves southward, and the daytime in the northern hemisphere becomes shorter. There is a folk proverb that "eating noodles on the solstice in summer will shorten the day". At this time, the southern hemisphere is in the middle of winter.