How many days are there in summer solar terms?

2. The summer heat is the twelfth solar term in the twenty-four solar terms of the lunar calendar, when the sun reaches longitude 120 degrees. The first15th day after the slight summer heat indicates that it is not the great summer heat, but the middle of June. Small and big are extremely hot, divided into sizes, small at the beginning and big at the back. Summer heat, which means hot, is a little hot, not very hot. It means that the weather is getting hotter, but it is not the hottest, and most parts of the country are basically in line with it. Crops all over the country have entered a vigorous growth period, and it is necessary to strengthen field management. Summer solar term is the hottest period in a year, with the highest temperature and the fastest growth of crops. At the same time, some natural phenomena such as drought, waterlogging and wind disaster are also the most frequent in many areas.