When is the yellow day?

I know that auspicious days on the zodiac used to be calculated according to astrology. It means that the six stars, Qinglong, Tang Ming, Jingui, Tiande, Yutang and Siming, are auspicious gods. On duty on the sixth day, everything goes well, which is called "auspicious day of the ecliptic". Generally refers to a good day to do things. Zodiac Day should be short for auspicious day in the zodiac.