The winter solstice in 2018 is December 22, less than ten days from this year's winter solstice. As we all know, the winter solstice is the coldest day of the year. After the winter solstice, we can count the days and look forward to the arrival of spring. The winter solstice is an important solar term in China's 24 solar terms. It is also a traditional festival of the Chinese nation. On this day, we have many traditional customs, but what is generally known to the public may be eating dumplings. There has always been a saying among the people that they don't eat dumplings and freeze their ears at the winter solstice. Let's introduce the winter solstice and the three seasons of the winter solstice. Do you know which three seasons are?
Winter solstice introduction
The winter solstice is a solar term divided by astronomy. In ancient times, it was called 'day short' and 'day short to'. On the winter solstice, the sun is located at 270 degrees of the Yellow meridians, and the sun is almost directly directed at the Tropic of cancer. It is the shortest day of the year in the northern hemisphere. There are no about 10 hours from sunrise to sunrise in our province. After the winter solstice, as the earth moves in its orbit around the sun, the direct sunlight zone gradually moves northward, increasing the days and shortening the nights in the northern hemisphere. Although the winter solstice has the lowest solar senior engineer, the shortest sunshine time, and the heat absorbed by the ground is less than the lost heat, the heat accumulated on the ground for a long time in the past continues to dissipate, and the near ground temperature has not yet fallen to the lowest, so this is not the coldest time of the year. After the winter solstice, although the day is getting longer and the night is getting shorter, the day is still short and the night is long in the short term. The heat absorbed by the ground every day is still less than the heat lost, so the temperature does not rise immediately. The masses are used to "counting nine" from the winter solstice, and a "Nine" every nine days. Before and after March 9, the ground area stored the least heat and the weather was the coldest, so it was said to be 'cold in March 9'. In astronomy, the winter solstice is regarded as the beginning of winter, which is obviously late for most parts of China. During the winter solstice, the average temperature in Western Sichuan Plateau is generally below 0 ℃, and that in Sichuan Basin is only about 6 ℃ to 8 ℃. However, in the low-altitude valley area of Southwest Sichuan, even in the coldest early January, the average temperature is still above 10 ℃. It can be said that autumn goes to spring and there is no winter all year round.
Three seasons of winter solstice
Earthworm knot: it is said that earthworms are creatures that bend Yin and stretch Yang. At this time, although Yang Qi has grown, Yin Qi is still very strong, and earthworms in the soil still curl up.
David horn solution: MI and deer belong to the same family, but the Yin and yang are different. The ancients thought that Mi's horn was born later, so it was Yin. When the winter solstice was born with Yang, MI felt that the Yin Qi gradually retreated and solved the horn.
Spring movement: the spring in the mountain can flow and warm.