Which is beginning of winter, beginning of winter or the winter solstice?

The difference between beginning of winter and the winter solstice

1, the difference in astronomy

Winter solstice is when the sun reaches 270 degrees of the yellow meridian, and winter begins when the sun reaches 225 degrees of the yellow meridian. On the day of winter solstice, the sun shines directly on the tropic of Capricorn, and on the second day of winter solstice, the sun will move northward. On that day in beginning of winter, the direct point of the sun was still moving southward day by day.

2. Climate differences

In ancient times, beginning of winter was the symbol that China entered winter. The winter solstice heralds the coldest time in winter, and it is also the first day of nine cold days.

3. Differences in traditional culture

Beginning of winter's status is not as high as the winter solstice, and it is said that it is "as big as a year". The winter solstice shows that Yin Qi is the heaviest, but it also shows that Yang Qi begins. The winter solstice is also the start date of calendar calculation in China's traditional calendar.

4. Differences between dates

The time in beginning of winter is between165438+1October 7 -8 every year; The time of winter solstice is between 65438+February 2 1 -23 in Gregorian calendar every year.

Which is beginning of winter, beginning of winter or the winter solstice?

In a sense, beginning of winter is the beginning of winter.

Traditionally, "beginning of winter" is the beginning of winter, and the dry climate with little rain in autumn gradually passed and began to transition to rainy and cold winter climate. After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon. Because there is still some energy in the heat stored on the surface, the temperature in early winter (Meng Dong) is gradually decreasing, but it is not very cold. As time goes by, strong cold air frequently goes south and crosses Nanling, and the weather is getting colder and colder. In the north, it is already very cold before winter begins.

The definition of "winter" in the 24 solar terms is: "Winter is the end, and everything is harvested", which means that the crops in autumn are harvested and put into storage, and the animals are hiding and hibernating. Beginning of winter, on the whole, is the beginning of winter and the collection of everything.

According to some local conditions, the ancients in China wrote 72 phases, dividing the solar terms in beginning of winter into three five days, thus determining three periods: "Ice begins with water; The second waiting place began to freeze; Waiting for the flood is a cockroach. "In the project, this solar water can already form ice; The land also began to freeze; In the third stage, pheasant refers to a big bird similar to pheasant, and pheasant is a big clam. After beginning of winter, big birds like pheasants were rare, but you can see big clams with similar lines and colors at the seaside. Therefore, the ancients thought that pheasants would become big clams in early winter.