China has 24 solar terms. Which of these solar terms is the most obvious climate change?

China's 24 solar terms should definitely go down in history. China will never experience such an era of sunrise and sunset. Everyone condenses the splendid Chinese civilization with their own sweat and wisdom.

Twenty-four solar terms are 24 special festivals in the lunar calendar of China, indicating the change of seasons. They are supplementary calendars formulated by China in ancient times to guide farming. The formulation of the twenty-four solar terms is based on the time series changes of astronomical phenomena, temperature, precipitation and phenology in the middle and lower reaches of the Yellow River, with Henan as the orthodox, and other regions are different.

China was an agricultural society in ancient times, and farming was carried out completely according to the sun. In order to clarify the law of the sun's movement, 24 solar terms have been added to the calendar to reflect the sun's movement cycle separately. The trajectory of the sun in a year is divided into 24 equal parts, each equal part is a solar term, which started in the beginning of spring and ended in the great cold, and was established in Qin and Han Dynasties.

Which of these solar terms is the coldest? The answer is great cold. Generally, this solar term is around 65438+1October 20th in the solar calendar every year.

Some people may ask, why is it the coldest in the great cold, not the winter solstice?

The Great Cold is actually the last of the 24 solar terms. Every year around 65438+10.20, when the sun reaches 300, it is a severe cold. ? At this time, the cold wave moves southward frequently, which is the coldest period in most parts of China in a year. After the severe cold, a new year's solar cycle is ushered in.

After talking about the coldest solar terms, let's take a look at the hottest solar terms. As the saying goes, "practice three or nine in winter and three volts in summer", the hottest solar term is the great summer heat. Generally, the sun reaches longitude 120 around July 23rd every year. At this time, it is around the "middling", which is the hottest period in a year, with the highest temperature and the fastest crop growth.

One cold, one summer and one night, the pace of culture has never stopped. The extension of solar terms also symbolizes the progress of life. Each of us is experiencing its changes, learning more knowledge and learning to be more tolerant.