What do you mean by Seven Obsidian Days?

The sun, moon and stars are all called obsidian, and the sun, moon and fire, water, wood, gold and earth are collectively called seven obsidians. In the past, people used to call it seven days a week, the sun is Sunday, the moon is Monday, and so on. Fire Obsidian Day is Tuesday, Water Obsidian Day is Wednesday, Obsidian Day is Thursday, Jin Obsidian Day is Friday, Earth Obsidian Day is Saturday and Japan Obsidian Day is Sunday.

"Seven Yao" was also called "Seven Politics" in ancient times. It is the collective name of seven celestial bodies in ancient China, such as the sun, the lunar moon, Chen Xing, Taibai, Huo Ying, the aged star and Zhenxing, which are the sun, the moon, water, gold, fire, wood and earth. At the same time, due to the reasons mentioned above, "seven politics" is also called "seven latitudes".

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All the weeks in the modern west, the Seven Obsidian Days in China and the Seven Obsidian Days in Japan, were introduced from ancient Babylon and the ancient Jewish state in the east, and may have originally come from the calendars of Amorites or Hebrews (the predecessors of Jews).

Jews spread it to ancient Egypt, and from ancient Egypt to the west. In the eighth century, China introduced China's calendar by Manichaeism with the date method of seven obsidian, and continued their respective versions in China and the west.

The name "Seven Waste Days", which stands for seven days a week, first appeared in the ancient Babylonian civilization in the two river basins. Around 700 BC, the system of dividing the week into seven days appeared in Babylon, and the surrounding areas were merged into one month.

Babylonians built seven-star altars to worship the stars. The seven-star altar is divided into seven layers, and each layer has a star god. There are seven gods from top to bottom: sun, moon, fire, water, wood, gold and earth.

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