The winter solstice is the year with the shortest day and the longest night in the northern hemisphere. After the solstice in winter, the days will get longer day by day. I have compiled a brief introduction about the 24th Winter Solstice Festival. Come and see. It might help you.

Winter solstice:

Winter solstice is an important solar term in the China lunar calendar, and it is also a traditional festival of the Chinese nation. The winter solstice is usually called "Winter Festival", "Dragon solstice Festival" and "Asian New Year". As early as more than 2,500 years ago in the Spring and Autumn Period, China had observed the sun with earth gauges and determined the winter solstice, which was the earliest of the 24 solar terms, and the time was between 0 and 23 in the solar calendar 65438+February 265438+February, which was the shortest day and the longest night in the northern hemisphere. In China, it is the custom to eat jiaozi from the solstice in winter. As the saying goes, "When winter solstice comes, eat jiaozi." Of course, there are exceptions, such as the custom of drinking mutton soup from winter solstice in Tengzhou, Shandong Province, which means driving away the cold. Dietary customs vary from place to place, but eating jiaozi is the most common.

Geographical significance:

Astronomical coordinates:

According to modern astronomical science, the sun shines directly on the tropic of Capricorn (also known as the winter solstice daily line), and the sun is most inclined to the northern hemisphere, which has the shortest day and the longest night. After the winter solstice, the direct point of the sun slowly shifted to the Tropic of Cancer.

The polar axis passes through the center of the earth and connects the north and south poles. The included angle with the orbital plane of the earth revolution is 66.5, which is perpendicular to the equatorial plane of the orbital plane of the earth rotation.

Lunar reference:

My divination is called the winter solstice. Yi Yue: My late king and even the Japanese were closed to the outside world, so business travel was no good.

From winter to the sun, the height of the sun is the lowest, the sunshine time is the shortest, and the heat absorbed by the ground is less 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 "cold on March 9", while September 9 is already 1 and February in the summer calendar, and most parts of China have entered spring, so it is "sunny on September 9".

Climatic characteristics:

Astronomy regards the winter solstice as the beginning of winter, which is obviously late for most parts of China. During the winter solstice, the average temperature in the northwest plateau is generally below 0℃, while it is only about 6℃ to 8℃ in the south. However, in the low-altitude valley area of southwest China, even in the coldest place, at the beginning of .65438+10, the average temperature is still above 10℃. It can be said that autumn goes and spring comes, and there is no winter all year round.

In ancient China, the winter solstice was divided into three stages: "One stage is earthworm knot; Two-phase angular solution; Waiting for the spring to gush out. " Legend has it that earthworms are creatures with yin bending and yang stretching. At this time, although the yang has increased, the yin is still very strong, and the earthworms in the soil are still curled up. Mi and deer belong to the same family, but Yin and Yang are different. The ancients thought that Mi's angle was facing the afterlife, so it was Yin, while winter was Yang. Mi felt that Yin was receding and the angle was dissolved. Because of the birth of yang, the spring water in the mountain can flow and be warm at this time.

The solstice in winter is the shortest day in a year. After the winter solstice, the direct point of the sun gradually moves northward, and the days in the northern hemisphere gradually lengthen and the nights gradually shorten. Therefore, there is a saying that "eating the winter solstice makes the day longer." In addition, the winter solstice begins to count to nine, and the winter solstice becomes the first day to count to nine. As for "Counting Nine", there is a folk song that goes like this: "Don't do it in September, walk on the ice in March and April, watch the willows along the river in May and June, open the river in July and September, geese come in August and September, and cows go everywhere in September and September."

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