How is the long summer calculated? When is the long summer usually?

How is the long summer calculated? Twenty-four solar terms: Long Summer and April Festival. Make a word to understand spring. Summer, holidays. At this time, everything is fake and big. Astronomically, Chang Xia said that bidding farewell to spring is the beginning of summer. When the temperature rises obviously, the summer heat comes, thunderstorms increase and crops enter the peak season, people are used to taking long summer as an important solar term.

Long summer is calculated according to the ecliptic. When the sun reaches 45 degrees of the ecliptic, it is the solar term of long summer. According to the standard of climatology, summer begins when the average temperature of that day rises above 22℃. Before and after the long summer, only the area south of Fuzhou-Nanling Line really entered the summer in China, while some areas in the northeast and northwest just entered the spring at this time, and the average temperature in most parts of the country was around 18-20℃. When is the long summer usually? Long summer is the seventh solar term in the twenty-four solar terms of the lunar calendar, and the first solar term in summer is usually around June 2 1 -22 every year. In the long summer, the temperature in the north and south of China is very different, and fluctuates frequently in the same area. The temperature in the rest of South China is around 20℃. The low-altitude valley felt hot in summer as early as mid-April, and the temperature in long summer was above 24℃.

Therefore, it is also a period of frequent crop diseases and insect pests, and it is a period when people are prone to catch cold. As Heshui Zuo said, the south is like the summer in the north and the spring in the north. The trees are green and beautiful. When you are sick, the insects sprinkle medicine, and the medicine is hot and cold.