China's 24 solar terms are the accumulated experience of working people in China. What are the 24 solar terms?

Beginning of spring, Spring Equinox, Long Summer, Summer Solstice, beginning of autumn, Autumn Equinox, beginning of winter, Winter Solstice, stinking, Qingming, Xiaoman, Mang, Rain, Grain Rain, Xiaoshu, Dashu, Chushu, Bailu, Cold Dew, Early Frost, Light Snow, Heavy Snow, Slight Cold and Severe Cold.

The solar calendar is called the solar calendar for short. The time for the earth to go around the sun is one year, 365 days a year (365 days in a normal year and 366 days in a leap year), which is divided into 12 months. There are four seasons, spring, summer, autumn and winter, due to the different positions of sunlight on the earth and the different cold and warm temperatures. Sunset and sunrise, wind, thunder, rain and fog.

In the long-term labor practice, the ancestors summed up a set of laws governing the operation of nature through careful observation of nature-that is, a season can be subdivided into six solar terms, and four seasons are twenty-four solar terms.

Among the 24 solar terms, beginning of spring, vernal equinox, long summer, summer solstice, beginning of autumn, autumnal equinox, beginning of winter and winter solstice reflect the seasons. Phenological phenomena are amazing, clear, rich and complex. Climate change is manifested in rainfall, Grain Rain, slight summer heat, severe summer heat, intense heat, white dew, cold dew, first frost, light snow, heavy snow, slight cold and severe cold.

Beginning of spring, Changxia, beginning of autumn and beginning of winter: The ancient people divided the four seasons. It means the beginning of spring, summer, autumn and winter. The date in beginning of spring is around February 4 of the Gregorian calendar every year; Long summer is around May 6th of the Gregorian calendar every year; Beginning of autumn is around August 8 of the Gregorian calendar every year; Beginning of winter is about Gregorian calendar 1 1.7 every year.

Autumnal Equinox: It means to divide the day and night equally. These two days are equal in length, and the vernal equinox and autumnal equinox divide spring and autumn into two sections. March 2 1 in the solar calendar is the spring year; Around September 23rd of Gregorian calendar is the autumn year.

Solstice in summer and Solstice in winter: This means that hot summer and cold winter have arrived. Because the day from summer solstice is the longest and the day from winter solstice is the shortest, the ancients called it long day and short day respectively. The summer solstice is around June 22 of the Gregorian calendar every year; The winter solstice is around 65438+February 22nd in the Gregorian calendar every year.

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Twenty-four solar terms are China's fifth invention.

China's twenty-four solar terms have been praised as "the fifth invention of China" by the world meteorological community, and have also been listed in the UNESCO representative list of human intangible cultural heritage, which has aroused widespread concern.

Twenty-four solar terms are a supplementary calendar formulated by the ancients to guide farming. They are called "solar calendar" because they sum up the changing rules of seasons, climate and phenology in a year through long-term observation of the sun's annual movement.

Since the Xia Dynasty, the working people in our country have been engaged in production activities according to the 24 solar terms, so it is also called the "summer calendar". The author carefully studied the historical materials of Emperor Yan and found that the formation of the twenty-four solar terms can be traced back to the era of Emperor Yan.

In ancient times, heaven and man were one. The first duty of any leader is to look up and down, teach the people the calendar, and take sacrifice and management etiquette as the center; The second is to expand the territory. Only when you have the ability to "understand astronomy and teach human crops" can you get the respect and support of your ancestors and become a "leader".

History shows that the Neolithic Age of primitive society is the embryonic state of the development of astronomy in China. At that time, people noticed the rise and fall of the sun and the change of the moon's profit and loss, which produced the concepts of time and direction.

In the era of Suiren, the north pole of the celestial sphere was determined, and the river map, Luo Shu and ephemeris were created. In the Fu era, the Eight Diagrams were invented and the astronomical observation system was established. When Emperor Yan arrived, he invented the solar calendar, discovered sunspots and invented the Mars calendar, which promoted the continuous progress and development of human civilization.

People's Network —— The Origin of the Twenty-four Solar Terms of "China's Fifth Invention"