What is the significance of tomorrow's winter solstice?

The winter solstice pressure is as follows:

First, worship the heavens and ancestors. Since the Zhou Dynasty, there has been a ritual activity for the winter solstice. Zhou Li Chun Guan Shen Shi: "With the winter solstice, ghosts and gods all come." On this day, many places will worship ancestors, and even the poorest families will take out their usual savings to buy new clothes and prepare sacrificial supplies.

Second, the traditional diet. Every place in winter has its own special cuisine, such as jiaozi in the north, Chaoshan Tangyuan, Southeast Mashi, Yuan Lei in Taizhou, Pumpkin Cake in Hefei, Ningbo Sweet Potato Soup, Tengzhou Mutton Soup, Jiangnan Rice, Suzhou Brewing and so on.

Third, family dinners. The solstice of winter is also a day for everyone to get together. Many families who don't usually live together will have dinner. If they are far away from home and can't go home, they must call their parents or relatives through WeChat.

Scientific definition of winter solstice.

The winter solstice is the 22nd solar term in the "24 solar terms", and the solar calendar reaches 270 degrees. Every year, the festival is held on 65438+February 2 1-23 in the Gregorian calendar. The solstice in winter is the extreme point of direct sunlight spreading to the south. From winter to the sun, the sun shines directly on the Tropic of Capricorn, and the sun is most inclined to the northern hemisphere, and the solar altitude angle is the smallest. In all parts of the northern hemisphere, the days are the shortest and the nights are the longest. The solstice in winter is also a turning point for the sun to return directly to the north. After this day, the direct point of the sun will go back. The direct point of the sun will move northward from the Tropic of Capricorn (23 26' s), and the daylight in the northern hemisphere (China is located in the northern hemisphere) will increase day by day.