What's the difference between early winter and early winter? What is the third waiting in early winter?

Beginning of winter, one of the 24 solar terms, is a seasonal solar term, symbolizing the official start of winter and the coming cold winter. Every year between Gregorian calendar165438+1October 7-8, when the sun is located at 225 degrees of the yellow longitude, it is the arrival time of beginning of winter. Beginning of winter is also divided into early winter and late winter, because the sun arrives at this position at different times. What is the difference between beginning of winter early and beginning of winter late? What are the characteristics of beginning of winter?

The biggest difference between early beginning of winter and late beginning of winter is that in time, when the sun reaches 225 degrees in the morning or at noon, it belongs to early beginning of winter and later beginning of winter. If it is early winter in beginning of winter in one year, the spring break in the second year will be earlier. Whether it is early in early winter or late in early winter, it marks the official entry into the cold winter. However, beginning of winter cannot be regarded as beginning of winter in meteorology. Besides, China is a vast country. Before winter, northerners have put on cotton-padded clothes and trousers, and southerners may still wear short-sleeved shorts, but there is a big temperature difference between morning and evening.

Beginning of winter, together with beginning of spring, Changxia and beginning of autumn, is called "Sili", which is an important festival in ancient society. People have the custom of "welcoming winter" and "supplementing winter". Li also means that winter begins; When winter is over, everything is collected. Starting from beginning of winter, autumn harvest and winter storage also have an obvious feature. The ancients divided each of the 24 solar terms into three equal periods, with a period of five days, and described the climate change characteristics of each solar term with three periods. Beginning of winter's three periods are "the water begins to freeze, the ground begins to freeze, and when it enters a flood, it is a flood."

The temperature changes can be clearly felt in the three seasons of early winter. The cold air in the north gradually moved southward from this time period, and the water surface began to freeze, and the land began to freeze. There may be obvious temperature drop in the south, but the obvious winter will not be felt until the end of 1 1.

Beginning of winter early and beginning of winter late both symbolize the official arrival of winter, but beginning of winter's early arrival may affect the time of next spring, and China's ancient farming season will also have some influence.