Traditionally, winter is three months from the beginning of winter to the beginning of spring. It starts with the 24 solar terms' beginning of winter '. At the beginning of winter, the sun is located at 225 & deg;, November 7-8.
Lidong is one of the twenty-four solar terms. The bucket handle points to the northwest, and the sun yellow meridian reaches 225 & deg;, The festival will be held between November 7 and 8 of the Gregorian calendar. The beginning of winter is a seasonal solar term, which means that it has entered winter since then, which means that wind and rain, dry and wet, light and temperature are at a turning point and begin to transition from autumn to winter.
Extended data:
Relevant climatic characteristics at the beginning of winter:
1. At the beginning of winter, the sun has reached 225 degrees of yellow longitude, and the earth is located at declination-16 & deg; 19 \ ', the height of the sun in the northern hemisphere becomes smaller, the daytime time is shortened, and the amount of solar radiation in the northern hemisphere is less and less. However, it is not very cold because there is still some energy stored on the surface in the second half of the year.
2. During Meng Dong (Lidong solstice light snow), when it is sunny and windless, there is often a warm and comfortable "little sunny spring" weather. There is a saying "October little sunny spring" among the people. In some southern areas, it is generally not very cold in early winter (Mengdong), but with the passage of time, the cold air frequently goes south and the temperature gradually decreases. （DongTianCongShenMeShiHouKaiShiSuan）