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The time that the sun travels in the celestial sphere, starts from the intersection line of the lunar orbital plane (white plane) and the ecliptic plane, and then returns to this intersection line is called the eclipse year, which is about 346.62 days.
Shinian: also known as "Nodal Year".The time interval between the ascending node (or descending node) of the zodiac and the ascending node (or descending node) of the ecliptic when the sun center passes through the white path on the celestial sphere twice in succession.It is named because it is related to the causes of solar and lunar eclipses.As the yellow white intersection moves westward with a period of 18.6 years, the eclipse year is about 20 days shorter than the stellar year;Its length is 346.6200 days, that is, 346 days, 14 hours, 52 minutes and 52.9 seconds. It is applied to the calculation of solar and lunar eclipses
Annual cost method
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This method is composed ofConfuciusInventions have been passed on to the land of China for thousands of years.It is used to calculate the state affairs, war, agricultural harvest, etc. of a certain year.
Decision: In the year of Zichouyin, we saw the rain; in the early morning, we sang the song of peace; in the afternoon, we burned the whole world; before we declared it, we would certainly see the war; in the end, we met the red sun and the heavenly virtues; in the end, we hurt the Miao people and became a river.
Brief explanation: Maonian and Chennian are peaceful years, and Weinian and Shennian are at war.
This method can be accurate only with three combinations. (1) With the combination of three elements of Jiazi, Shangyuan Jiazi is born in heaven and earth, and everything is thriving;Zhongyuan Jiazi's heaven and earth are full, and all things are excessive;In the lower Yuan Dynasty, Jiazi's heaven and earth declined, and all things failed.(2) In combination with the ten years of qi in a Yuan Dynasty, that is, in a good year in a Yuan Dynasty, in a dry year in a third year, and in a disorderly situation in a third year, the insects, locusts, and locusts are all in chaos.(3) In conjunction with the heavenly stems and earthly branches of a certain year, the following year is the year of Gengchen of Jiazi in the Yuan Dynasty. It is not necessarily a peaceful year. The failure of Jiazi in the Yuan Dynasty is to reduce the score on the basis of Chen Taiping. Gengchen, the heavenly stems are golden and the earthly branches are the first mountain in the southeast. The heavenly stems are the monarch, the earthly branches are the people, and the people's livelihood is the monarch's gold. The people support the monarch, and the monarch's forcible usurpation of people's welfare will inevitably lead to corrupt officials.In the Gengchen year of Jiazi in the Yuan Dynasty, it was always decided that the foreign minister was peaceful. Greedy officials came from the inside and heroes returned to the earth (Chen, the first mountain in the southeast is also the gate of hell, and Tianluo is also, and heroes or meritorious officials must die in that year). The rest were deduced from this.
