Ecliptic
1. Astronomical terms
The "apparent motion" of the sun on the celestial sphere is divided into two situations, namely "apparent motion" and "apparent motion" Anniversary Vision Campaign”. "Diurnal apparent motion" refers to the phenomenon of the sun rising in the east and setting in the west every day, which is essentially a visual effect caused by the rotation of the earth; "annual apparent motion" refers to the "traveling" of the sun between the constellations caused by the rotation of the earth. phenomenon.
In astronomy, the annual apparent motion trajectory of the sun on the celestial sphere, that is, the great circle of the apparent path of the sun traveling through the sky, is called the "ecliptic", which is also the projection of the earth's orbital plane on the celestial sphere. The sun rotates once a year along the ecliptic on the celestial sphere. In order to facilitate the determination of its position, people divided the ecliptic into twelve equal parts (each part is equivalent to 30°). Each part is named after a neighboring constellation. These constellations are Called zodiac signs or zodiac signs. In this way, it is equivalent to dividing the year into twelve segments, and the sun enters a constellation during each period. In the West, whichever constellation the sun was in when a person was born is said to belong to that constellation.
The ecliptic and the celestial equator have an intersection angle of 23 degrees and 26 minutes (yellow-red intersection angle); the two intersection points of the ecliptic and the celestial equator are the vernal and autumnal equinoxes. In the ecliptic coordinate system, the ecliptic longitude of a celestial body is measured eastward along the ecliptic from the vernal equinox, with the north ecliptic latitude being positive and the south ecliptic latitude being negative. The distance between the South and North Yellow Pole to the corresponding celestial pole is 23 degrees 26 minutes. Since the Earth's revolution is perturbed by the moon and other planets, the Earth's orbit is strictly flat, which causes irregular and continuous changes in space. This change includes multiple short-period changes and a slow long-term motion. Short period motion can be eliminated by averaging within a certain period, and the orbital plane in addition to periodic motion is called the instantaneous orbital plane. The strict definition of the ecliptic is: the instantaneous average orbital plane where the center of mass of the earth and moon revolves around the sun? The great circle where the celestial sphere intersects. The ecliptic is the base circle of the ecliptic system on the celestial sphere.
Because we can only see the sun during the day, and we cannot see the stars at this time. So whichever constellation the sun goes to, we just can't see that constellation. In other words, when we celebrate our birthdays, we just can’t see the zodiac sign to which we belong.
2. Characters
The zodiac has the word auspicious day and the name is the messenger of mystery. Born in 1966, he was a native of Chengji (now Jingning, Gansu Province), the hometown of Fuxi, the ancestor of China, the ancestor of humanities, and Yi Sheng. He has been practicing Yi since he was a child and has a long history in his family. When he was older, he received formal higher education and worked as a middle school teacher and a national cadre.
Internationally renowned master of Zhouyi Feng Shui culture;
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Director of the Chinese Fuxi Research Association;
Southern China Consultant of the Medical University;
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Auspicious Days of the Zodiac
Words Auspicious day of the zodiac
Pronunciation huáng dào jí rì
Explanation: An auspicious day that superstitious people think can do things. According to superstitious theory, the six chens such as Qinglong, Mingtang, Jingui, Tiande, Yutang, and Siming are auspicious gods. When the six chens are on duty, everything will be appropriate, and evil will not be avoided. Generally refers to an auspicious day when you can do things.
From the fourth chapter of "Lianlian Ji" written by Anonymous Yuan Dynasty: "Today is an auspicious day for the emperor. All the ministers of the Manchu Dynasty are at Yintai Gate, urging the grand master to come to the court to teach Zen."
Example: The next day was ~, Yang’s mother was used as a matchmaker, saying that she was reluctant to let her daughter go out, so she married Zhang Youqian. (Volume 29 of "The Surprise at the First Carving of the Case" by Ling Mengchu of the Ming Dynasty)
In the old days, astrology was used to predict good and bad luck. It was said that the six stars of Qinglong, Mingtang, Jingui, Tiande, Yutang, and Siming were auspicious gods. , when the sun is on duty at six o'clock, everything is suitable, and no evil or avoidance is avoided, so it is called the "auspicious day of the zodiac".
Generally refers to a good day for doing things.
Your Majesty, today is an auspicious day. ——"Selected Songs of the Yuan Dynasty·Lian Lian Ji"
During the reign of Emperor Xuanzong of the Tang Dynasty, there was a scholar named Ji Ri who met a young lady named Chen when he was studying in school. The two were very friendly.
At the age of twenty, Ji Riyang’s matchmaker came to the Chen family to discuss marriage. Seeing that Ji Ri was smart and honest, the Chen family readily agreed. Jiri was very happy after hearing the news. He told his friend Huangdao about it and told him the wedding day. Huang Dao said: "No, this is the day when the emperor chooses beautiful women. You should take Miss Chen and escape for a few days!" Jiri did not listen to his advice and still held a happy event on this day. Before the bride even got into the sedan chair, the emperor's soldiers and horses saw her extremely beautiful, snatched the bride away, and knocked Jiri unconscious. Huang Dao was very angry when he saw it and rushed to rescue the bride. When the officers and soldiers saw that someone dared to take back the bride, they surrounded Huang Dao. Huang Dao fought desperately with the officers and soldiers to save the bride, but he died of excessive bleeding. Everyone was extremely sad and buried Huang Dao ceremoniously.
A few years later, Jiri won the first prize in the exam. One day, Emperor Xuanzong wanted to send troops to the people to select beauties. When Jiri found out, he went to the Jinluan Hall to stop him. Xuanzong was furious and asked the warriors to push Jiri to noon. He was beheaded at the gate, and people buried him next to the Zodiac Tomb in order to commemorate his achievements in protecting the people on auspicious days.
Since then, people have held weddings in front of the tombs of the zodiac and auspicious days.
Later, due to inconvenience, people who got married no longer held weddings in front of the tombs of the zodiac and auspicious days, so they chose the wedding day as an auspicious day of the zodiac to commemorate the zodiac and auspicious days. This is the origin of auspicious days.