What is the summer solstice?

Summer solstice is 10 of the 24 solar terms. Fighting means noon; The yellow meridian of the sun is 90 degrees; June 2 1~22 of Gregorian calendar. On the day of summer solstice, the position where the sun shines directly on the ground reaches the northernmost part of the year, almost directly on the tropic of cancer. At this time, the daylight hours in all parts of the northern hemisphere reach the longest in the whole year. For the Tropic of Cancer and its northern region, the summer solstice is also the highest day at noon in a year.

The solstice in summer is the turning point of the sun's northward movement. After the summer solstice, the direct point of the sun began to move south from the Tropic of Cancer, and the days in the northern hemisphere began to shorten gradually. For the area north of the Tropic of Cancer in China, the height of the noon sun begins to decrease day by day from summer to the future. For the area south of the Tropic of Cancer in China, the height of the sun returns to the south from summer to noon in the future, and it begins to decrease day by day after the sun shines again.

High temperature, high humidity and occasional thunderstorms are the weather characteristics from summer to the future. The summer solstice is in midsummer, that is, at noon, belonging to the sun; Although summer is full of yang and the daytime is the longest, it is not necessarily the hottest day of the year, so the heat near the surface is still accumulating and has not reached the maximum.

The summer solstice is not only one of the 24 solar terms, but also a festival in the ancient "four seasons and eight festivals". Since ancient times, people have the custom of worshipping gods and ancestors in the summer solstice. In addition, after the summer solstice, people generally drink Qingbuliang soup, herbal tea and sour plum soup to escape the heat.