What is the cold weather? What's the difference between them?

The difference between a severe cold day and a winter solstice is that:

1. The winter solstice has the shortest sunshine during the day and the longest night. Solstice is an important solar term in the China lunar calendar, and it is also a traditional festival of the Chinese nation, which existed as early as 2500 years ago in the Spring and Autumn Period. China observed the sun with the soil, and determined the winter solstice, which is the earliest of the 24 solar terms, and the time is between June 65438+February 2 1 to 23 in the Gregorian calendar every year.

2. The severe cold day is the coldest day in the whole year, and it is a solar term. The time is 65438+1October 20th. The severe cold day is the last of the 24 solar terms. Like the slight cold solar term, it is a solar term that reflects the degree of cold weather.

Winter is also called Solstice Festival, because it is a festival of the arrival of the cathode, the beginning of the sun and going south to the sun. As the new year is coming after the winter solstice, there is a saying that the winter festival is as big as the New Year, which means that the custom of the winter solstice is almost the same as the New Year's festival. "Since the Middle Ages, although the winter solstice (solstice) is not an annual festival, people used to regard it as the dividing point of the' solar year', because on the day of winter solstice, the day is the shortest and the night is the longest, and then the night becomes shorter, the day becomes longer, and the yin disappears and the yang grows longer, and a new solar year begins. References:

Baidu encyclopedia-24 solar terms