The custom of winter solstice
From winter to the sun, the sun reaches 270 degrees, and festivals are held every year on the Gregorian calendar 65438+February 2 1-23. Winter solstice is one of the eight festivals in a year. In ancient times, people had the custom of praying to God and offering sacrifices to their ancestors.
Winter solstice is regarded as a big holiday in winter. There is a folk saying that winter solstice is as big as a year, so the ancients called it "sub-year" or "off-year". In some coastal areas in southern China, the traditional custom of worshipping ancestors from the winter solstice is still continuing. In some areas of northern China, it is a custom to eat jiaozi every winter solstice.
Astronomical calendar:
As an important node of the 24 solar terms in China, the winter solstice has the shortest day and the longest night in the north of the equator. The winter solstice is the limit of the sun's southward travel, and the height of the sun in the northern hemisphere is the smallest on this day. On the solstice of winter, the sun shines directly on the tropic of Capricorn, and the sun is most biased towards the northern hemisphere.
The solstice in winter is the turning point of the sun's southward movement. After this day, I went back, and the direct point of the sun began to move northward from the Tropic of Capricorn (23 26' s), and the daytime in the northern hemisphere (China is located in the northern hemisphere) increased day by day. Because the earth is at perihelion near the winter solstice, it runs a little faster.
This causes that the time of direct sunlight in the southern hemisphere is about 8 days shorter than that in the northern hemisphere, so the winter in the northern hemisphere is slightly shorter than that in summer. ?