Is the longest night in the northern hemisphere the winter solstice in the lunar calendar or the 65438+February 22nd in the solar calendar?

The longest night in the northern hemisphere is the winter solstice of the lunar calendar.

The winter solstice is the year with the shortest day and the longest night in the northern hemisphere.

In winter solstice, although the sun is low and the days are short, the temperature in winter solstice is not the lowest in meteorology. In fact, because there is still "accumulated heat" on the surface, it is usually not very cold before the winter solstice, and the real cold is after the winter solstice. Because of the huge climate difference in China, this climatic winter is obviously late for most parts of China. The winter solstice marks the beginning of the cold season, and people begin to count to nine to calculate the cold weather (folk proverb: "The summer solstice is the third watch, and the winter solstice is the ninth watch").

Winter solstice is one of the eight festivals in a year. Since ancient times, our ancestors have a tradition of offering sacrifices to their ancestors during the winter solstice to express their filial piety and not forget their roots. Due to different local customs and habits, the forms of ancestor worship are also different. While offering sacrifices to ancestors, they also offer sacrifices to the gods of heaven and earth. The offerings mainly include three sacrifices, three teas and five wines.

Every winter solstice, no matter the rich or the poor in northern China, jiaozi is indispensable. Jiaozi eaten in the winter solstice and jiaozi eaten in the Spring Festival have different meanings. Jiaozi eaten during the Spring Festival is at the junction of the new year and the old year, and jiaozi means "making friends" when you are old. Eating jiaozi during the Spring Festival is considered lucky. Jiaozi, which is eaten from the winter solstice, means to drive away the cold.

According to legend, Zhang Zhongjing, a medical sage, saw the frozen people when he retired in his later years, so he wrapped mutton, some cold-dispelling herbs and dough in his ears and made the medicine of "Joule Decoction for Eliminating Cold" for the people to eat. Later, every winter solstice, people imitate it and eat it.