6.2 1 Is it the summer solstice?

Summer solstice Every year on June 2 1 or June 22, the sun reaches 90 degrees of the yellow meridian, which is the "summer solstice" solar term. 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 the summer solstice, the position where the sun directly hits the ground reaches the northernmost point of the year, almost directly on the tropic of cancer (23 27' north latitude).

According to relevant records, it is said that the killing of dogs in summer solstice originated in the year after Qin Degong ascended the throne in the Warring States Period, and it was extremely hot in June, causing epidemic diseases. According to the saying that "dogs are yang animals, which can bring misfortune", Qin Degong ordered his subjects to kill dogs to ward off evil spirits, and later formed the custom of killing dogs in summer solstice.