Summer Solstice

It is the 10th solar term of the 24 solar terms. The solar meridian is 90 °; The festival falls on June 21-22 of the Gregorian calendar. On the summer solstice, the position where the sun shines directly on the ground reaches the northernmost point of the year, almost directly illuminating the Tropic. At this time, the days in the northern hemisphere reach the longest time of the year. For the Tropic of Cancer and the regions to the north, the summer solstice is also the day with the highest sun height at noon.

The summer solstice is the turning point for the sun to move northward. After the summer solstice, the direct point of the sun began to move southward from the Tropic, and the days in the Northern Hemisphere began to get shorter. For the area north of China after the summer solstice, the noon sun height began to decrease day by day; For the area south of the Tropic of Cancer in China, the noon sun height returns to the south after the summer solstice, and it starts to decrease day by day after the sun shines directly again.

High temperature, high humidity, and occasional thunderstorms are the weather characteristics after the summer solstice. The summer solstice is in the position of mid summer, that is, the noon position, and the noon belongs to the yang; Although the summer solstice has a strong yang energy and the longest day, it may not necessarily be the hottest day of the year, so the heat near the surface is still accumulating and has not reached its maximum. The summer solstice is not only one of the 24 solar terms, but also a folk festival in ancient times known as the "Four Seasons and Eight Festivals". Since ancient times, there has been a custom of worshipping gods and ancestors during the summer solstice. In addition, after the summer solstice, people generally drink cool tea soup such as herbal tea, Suanmeitang, etc. to escape the summer heat.