What does the time next to the solar terms on the calendar mean?
The valuable scientific heritage summed up by the relationship. In ancient times, solar terms were called qi for short, and the word qi was actually heaven.
The significance of climate. The ancient year was divided into twelve months, and each month had two solar terms. There is a festival ahead.
Gas, the gas behind, for example, beginning of spring is the solar term in the first month, and the rain is in the first month, so later generations unified the solar term with the gas in the middle.
Called solar terms, it is 24 solar terms plus 12 months solar terms. Their names are the beginning of spring, rain and surprise.
Sting, Spring Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu, Dashu, beginning of autumn and Chushu.
White dew, autumnal equinox, cold dew, first frost, beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. for (the sake of) convenience
To commemorate, there is a popular song in our country called Twenty-four solar term song:
Spring rains hit the clear valley in spring,
Summer is full, summer is full,
Autumn dew and autumn frost,
It snows in winter, snows in winter and is cold in winter.
The first half of the year is June 2 1 day.
In the next six months,
There are two festivals every month,
It won't take more than a day or two.
At first glance, the names of the 24 solar terms are chaotic, but in fact, they are well organized and can be summarized into three categories:
The first category reflects the seasons. Dichotomy (vernal equinox, autumnal equinox), two solstices (summer solstice, winter solstice) and four verticals (vertical)
Spring, long summer, beginning of autumn, beginning of winter) are used to indicate seasons, and a year is divided into four seasons. Dichotomy, two people agree.
The turning point of the sun's height change. Because from the astronomical point of view, it is applicable to all of China.
Area. Standing four times is not necessarily the case. Although it also reflects the beginning of the season in astronomy, due to China's vast territory,
The monsoon and continental nature of the climate are extremely remarkable, and the climate varies greatly from place to place, so the start dates of the four seasons in various places are the same as those in other places.
Its duration is different, some areas have distinct seasons, some areas are not obvious, or even a whole.
Seasons don't even appear. For example, in the alpine region north of Aihui, there is no summer on the Qinghai-Tibet Plateau. green
There is a saying on the Qinghai-Tibet Plateau: "It is still cotton in midsummer in June, and it is cold all year round." Not south of Fuzhou, South China.
In winter, in some areas, it is almost summer all the year round. It is really "the grass does not wither in winter and flowers bloom in spring", "four"
It's always summer, and when it rains, it becomes autumn. "The principle of Yunnan and Guizhou is another scene, with short winter and no summer, such as Kunming.
It's called "four seasons are like spring". Therefore, although Li Si is separated from astronomy, it has a strong regional character. it
Can't adapt to the whole country.
The second category reflects climate characteristics. There are slight summer heat, great summer heat, summer heat and slight cold that directly reflect the heat condition.
There are five solar terms in the Great Cold, which are used to indicate that the degree of heat and cold in different periods of the year and the summer heat are about to pass.
They are all accurate. There are four solar terms that directly reflect the precipitation phenomenon: rain, Grain Rain, light snow and heavy snow, indicating health.
Time and intensity of rainfall and snowfall. In addition, although the three solar terms, White Dew, Cold Dew and First Frost, are all condensed by water vapor,
The condensation phenomenon also reflects the process of gradual temperature drop and the degree of temperature drop in each solar term. first
It is the temperature that begins to drop, and more water vapor condenses; In the future, the temperature will drop even more, not only more exposure, but also cooling down.
It's coming, but it's not frozen; Finally, the temperature drops below zero degrees Celsius, and the water vapor condenses into frost. From agricultural production
Look, these three solar terms are more meaningful than water, concrete and vivid.
The third category reflects phenological phenomena. Xiaoman and awn species reflect the maturity and harvest of related crops; Awakening of Insects
Qingming reflects natural phenological phenomena, especially stings, using the first thunder in the sky and the resurrection of underground stingers.