Winter solstice solar terms, what does winter solstice mean, and what does winter solstice represent?

The winter solstice is the 22nd of the 24 solar terms in China, and it is also a traditional festival of the Chinese nation. After the solstice in winter, the days will get longer day by day. Winter solstice, south solstice, short day, long shadow.

As early as more than 2,500 years ago in the Spring and Autumn Period, China had observed the sun with the earth and determined the winter solstice, which was the earliest of the 24 solar terms. The time is between 65438+February 265438+February 0 and 23, and when the longitude of the sun reaches 270 degrees, it is the shortest day and the longest night in the northern hemisphere all year round.

During the Yin and Zhou Dynasties, it was stipulated that the day before the winter solstice was the end of the year, and the winter solstice was equivalent to the Spring Festival. Later, the summer calendar was implemented. However, the winter solstice has always ranked first among the 24 solar terms, and it is called "dividing the year".

Although the height of the reference sun is the lowest and the sunshine time is the shortest in winter solstice, the heat absorbed by the ground is more than the heat lost. After the winter solstice, it begins to count to nine, and every nine days is a "nine". The heat accumulated on the ground around March 9 is the least, and the weather is the coldest, so it is said to be "three-nine cold", while September 9 is already 1 February of the lunar calendar, and most parts of China have entered spring, so it is "September 9 sunny".