What does the twelve perils in the yellow calendar mean?

Twelve dangerous days in the Gregorian calendar mean that an average of 12 days is a dangerous day, which belongs to one of the founding days of 12.

In the past, people had a custom that whenever there was something important to do, they would look at the day and choose a good day. The most auspicious day is the auspicious day of the zodiac, and people think that it is the easiest day to succeed in doing things.

Corresponding to the auspicious day of the ecliptic is the sinister day of the underworld. This day is not suitable for doing anything, and everything needs to be cautious.

Extended data:

In ancient times, astrological gods were used to calculate good or bad luck, and the mystery of choosing good or bad luck lies in gods. Xie Fangshu believes that the so-called god and evil are only the natural movement laws of heaven, earth, sun, moon and five stars and their relationship;

God and evil spirits are synonyms of these laws or relationships. There is no such thing as God or evil spirits. Gods and evil spirits are the laws governing the movements of heaven, earth, sun, moon and five stars, as well as their relations. Choosing good luck according to gods and evil spirits is essentially respecting nature and acting according to the laws of heaven and earth.

God and evil spirits have different dates, and each has its own master. The choice of auspicious day is mainly the choice of day, just like fortune telling. But the choice of auspicious day is not good or bad regardless of year, month and time, but to have a look at each other and make a comprehensive choice.

There are twelve evil spirits in the underworld of the ecliptic: Qinglong, Baihu, Tang Ming, Tianpunishment, Suzaku, Jingui, Tiande, Yutang, Tianlong, Xuanwu, Siming and Gouchen. "Qinglong, Tiande, Yutang, Siming, Tang Ming and Jingui" are called the six zodiac signs, and the days when the six gods are on duty are called the auspicious days of the zodiac, which means that everything is auspicious, not avoiding evil and avoiding everything.