What are the 24 solar terms? A brief introduction to the 24 solar terms.

The solar terms of 1 and 24 are special festivals in the calendar to express natural rhythm changes and establish "December architecture". A year is divided into four seasons, three months in spring, summer, autumn and winter, and two solar terms in each month. Each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs. The twenty-four solar terms contain a long cultural connotation and historical accumulation, and are an important part of the long history and culture of the Chinese nation.

2. "Twenty-four solar terms" is the product of ancient farming civilization. It is a knowledge system formed by ancient ancestors following the farming season, observing the movement of celestial bodies and understanding the changing laws of seasons, climate and phenology throughout the year. The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper rotates once and bucket handle rotates once clockwise, which is called one of the "years" (Figure). The current "twenty-four solar terms" are formulated according to the position of the sun on the return to the ecliptic, that is, the annual movement track of the sun is divided into 24 equal parts, each 15 is 1, and each 1 is a solar term, starting in beginning of spring and ending in severe cold.

3. Through historical development, the lunar calendar has absorbed the solar terms of the trunk calendar as a supplement to the calendar, and adjusted it to conform to the tropic year through the method of "placing leap", forming a combined calendar of yin and yang, and the "24 solar terms" has become an important part of the lunar calendar. In the field of international meteorology, the 24 solar terms are known as "the fifth invention of China". 2016165438+1October 30th, 24 solar terms were officially listed in UNESCO's Representative List of Intangible Cultural Heritage of Humanity.