When is the winter solstice in the solar calendar?

The winter solstice (Gregorian calendar1February 2 1 day or 22nd) is the beginning of September of the lunar calendar. The ancients believed that it was an auspicious day for the winter solstice to lengthen the day and raise the sun's spirit. Therefore, it is worth celebrating. Emperors in the Ming and Qing Dynasties had ceremonies to worship heaven, which was called "the suburb from winter to the sun". There was a ceremony in the palace where hundreds of officials congratulated the emperor. They also threw thorns at each other and congratulated each other, just like New Year's Day. However, people do not regard the winter solstice as a festival, but have some timely activities. Southerners visit Beijing, and some people hold banquets to worship their ancestors. At the same time, colleagues or close friends are invited to have dinner together. Yan customs are not important for winter festivals. Old Beijingers don't want this. On the day of winter solstice, a grand ceremony was held in all the streets of the capital. At the beginning of the Yuan Dynasty, the Taoist took a kiss and went to the table to celebrate the Buddha's birthday. According to Taoism, the Buddha in the early Yuan Dynasty symbolizes the first century when chaos and Taoism were not divided. Therefore, people have the custom of eating dolphin. "Yanjing Years Old" says: "The shape of husband's wonton is like a chicken egg, which is quite similar to the chaos of heaven and earth, so it is eaten from winter to the sun." In fact, "wet wonton" and "chaos" are homophonic, so people extend eating wonton to break the chaos and create the world. Later generations no longer explain its original meaning, but spread the proverb "Wonton from winter to the sun, and from summer to the sun", treating it simply as a seasonal diet.