When was the ephemeris first produced?

Before the Western Han Dynasty, there were six ancient calendars in China, namely: Huangdi calendar, Zhuan Xu calendar, Xia calendar, Lunar calendar, Zhou calendar and Lu calendar. Among the six calendars, the Yellow Emperor calendar is the oldest, which is what we call the Yellow Calendar. The yellow calendar was created by Xuanyuan, the Yellow Emperor, so it was called the yellow calendar. Almanac is also called imperial calendar, calendar day, constitutional book, general book and general victory.

Its main contents are the schedule of the 24 solar terms, the good and bad luck of each day, the luck of the zodiac, branches and branches, the value of God, stars, moon phases, bad luck and so on. From yin and yang, two meanings, gossip, jiazi, time, birth, punishment, and so on.

Extended data

App application

In modern times, the main contents of the Gregorian calendar include three calendars: solar calendar, lunar calendar, and dry calendar. Good luck should be avoided, washed away, auspicious, evil, combined harm, singing, dry branch, twenty-four solar terms, twelve gods, duty, fetal god, Peng Zu Bletilla, Liu Yao, nine planets, fleeting time, prince, three yuan and nine luck, nine planets in Kong Xuan, and the god of wealth. That is, people in ancient China recorded their daily likes and dislikes on the calendar as a guide to action.

Shallow examination

China's traditional calendar is based on heavenly stems and earthly branches's arrangement, combination and circulation, which means circulation and reappearance. It is this "recurrence" that makes it meaningful to choose a date to avoid it. The fundamental basis for the ancients to formulate calendars and determine auspicious days is the sun, the moon and the stars. Among them, the stars are the most critical factor in determining the date, and the Gregorian calendar basically does not consider these, so there is no so-called taboo.