The arrival of beginning of winter indicates the beginning of winter, the weather began gradually from dry to rainy cold. The winter solstice is the day when the sun shines directly on the Tropic of Cancer, the longest night of the year.
The 24 solar terms include the beginning of spring, summer, autumn and winter. The arrival of various solar terms also indicates the change of weather and is helpful to agriculture. So the Beginning o
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Lidong, one of the 24 solar terms, the bucket handle points northwest, the solar ecliptic longitude reaches 225°, and it is intersected between November 7 and 8 of the Gregorian calendar every year.Lidong is a seasonal solar term, which means that winter has entered since then.From a dry climate with little rain in autumn to a rainy and cold winter climate.
The winter solstice is the 22nd solar term of the “24 solar terms”, and the solar ecliptic longitude reaches 270°, which is held on December 21-23 of the Gregorian calendar every year. The winter solstice is the ultimate in the sun’s southward journey, when the sun is at its lowest height in the northern hemisphere. On the day of the winter solstice, the sun shines directly on the Tropic of Capricorn, and the sunlight is most inclined to the northern hemisphere.
The sunshine time will continue to shorten after the winter, the height of the sun will continue to decrease at noon, because the heat stored on the surface still has some energy, so the temperature in the early winter (Meng Winter) period gradually decreased, but not very cold; As time goes by, strong cold air frequently moves south and crosses the Nanling Mountains, making the weather colder and colder. In the north, it is very cold before the beginning of winter.
The winter solstice, also known as the short solstice, the winter festival, the Yasui, and the worship of winter, has two connotations of nature and humanities. It is not only an important solar term in the twenty-four solar terms, but also a traditional Chinese folk festival. The Winter Solstice is one of the eight festivals at 04:00, which is regarded as a big winter festival. In ancient times, there is a saying that “the Winter Solstice is as big as a year”, so the ancients called the Winter Solstice “Asian year” or “small year”.
Lidong means that winter has started since then. Traditionally, the “Lidong” of the 24 solar terms is used as the beginning of winter. The winter solstice marks that the cold season is about to enter, and the folks begin to “count nine” to calculate the cold weather. Number nine is a Chinese folk method of calculating cold and warm dates.