What does nine planets nine purple mean on the calendar?

On the calendar, Nine Planets and nine purple refer to nine planets.

In astronomy, there is the theory of the Big Dipper. Their rankings are White Wolf, Black Giant Gate, Three Green Wen Qu, Huang Wu Lian Zhen, Six White Wu Qu and Seven Red Pojun. These seven stars are called the Big Dipper, and there are two stars between Pojun, bucket handle and Wu Qu. One star is right-handed, the other is common in Zuo Fu, and Zuo Fu ranks eighth and right.

Nine planets in geomantic omen: Legend has it that they are one white, two black, three green, four green, Huang Wu, six white, seven red, eight white and nine purple. The nine planets in Taoism refer to zenith, Tian Rui, Tian Chong, Tianfu, Tianjie, Tianxin, Tianzhu, Renxing and the nine planets. Others call the Big Dipper the nine planets after adding Zuo Fu and Youbi.

The historical origin of the nine planets:

The nine planets originated from ancient people's natural worship of ancient stars, which is the product of the combination of ancient mythology and astronomy.

According to the Book of Changes, the nine planets use the laws of "River Map" and "Luoshu" to calculate all kinds of good and bad luck of geographical feng shui, and summarize the universe with the nine planets. Therefore, we must know the orbits of the nine planets to understand the reason of "Heluo".

Refer to the above content: Baidu Encyclopedia-Nine Planets