When is the date of the winter solstice?

February 22nd to 23rd (12) of the Gregorian calendar is the winter solstice every year, which represents the official arrival of winter. The ancients said that the winter solstice: when the cathode arrived, the yang began to grow, the sun went south, the day was short and the shadow was long, so it was called "the winter solstice". After the winter solstice, the climate everywhere has entered the coldest stage, which is what people often say. There is a folk saying in China that "it's cold in March and hot in dog days".

The winter solstice is the year with the shortest day and the longest night in the northern hemisphere. According to modern astronomical science, on the solstice in winter, the sun shines directly on the tropic of Capricorn, and the sun is most inclined to the northern hemisphere. The northern hemisphere has the shortest day and the longest night. After the winter solstice, the sun gradually moves northward, and the days will be longer day by day.

In ancient China, people attached great importance to the winter solstice and thought it was a grand festival. There is a saying that the winter solstice is as big as a year, and there is a custom to celebrate it. "Han Shu" said: "The sun shines on the winter solstice, and you are long, so congratulations." People think that after the winter solstice, the days become longer and longer and the sun rises. This is the beginning of a solar cycle and an auspicious day, which should be celebrated. The Book of Jin records: "On the winter solstice of Wei and Jin Dynasties, people from all over the world celebrated ... its appearance was not as good as that of Zheng Dan." Explain the ancient emphasis on the winter solstice.

Now, some places still celebrate the winter solstice as a festival. The northern region has the custom of slaughtering sheep and eating jiaozi and wonton from winter solstice, while the southern region has the custom of eating glutinous rice balls and long noodles from winter solstice on this day. There is also the custom of offering sacrifices to heaven and ancestors in winter solstice in various regions.