The ancients paid special attention to the time of sunrise, with one day in the morning. People usually regard children born in the morning as auspicious arrival, and name them dawn, sunrise and dawn. Sunrise is also called dawn, which means that the darkness is about to pass and the dawn is coming. Roosters usually crow around dawn. Chairman Mao has a poem: "When a rooster crows, the world turns white". Dongfanghong, the sun rises, and evil prevails. In Journey to the West, Tang Priest was captured by scorpion essence, and the Pleiadian star official was a rooster. When the Pleiadian official called, the two evil poisonous insects, scorpion essence and centipede essence, were scared out of their wits. The dawn of sunrise is the arrival of Shi Mao, and Pleiadian officials are the duty fairies of Shi Mao. The sunrise time is not fixed. It is 6: 30 in winter (true sun) and 4: 30 in summer (true sun). Shi Mao in winter is two hours behind Shi Mao in summer. After the eight-character fortune-telling came into being, it coincided with the popularity of cats in China. The ancients identified time by observing the pupil shape of cat's eyes. Song's formula is as follows: "There is a line in the meridian, such as a mirror circle. Chen Chou is not in the shape of a jujube pit, but at twelve o'clock. " I have not tried the accuracy of this method. It is said that the cat's pupil is related to sensitivity, so it is necessary to observe the changes of the cat's pupil under natural light.
Many people forget the birth time of their children because of their parents' negligence. The ancients left several ways to distinguish the time of eight characters:
The first one distinguishes the time of birth according to the face shape. The faces born at four hours are round, those born at four hours are square, and those born at four hours are long.
The second is to distinguish the time of birth according to the position and number of spiral fossa in the individual's head. The heads born in Zi Shi, Wu Shi, Mao Shi and You Shi rotate in the center of the head, while those born in Yin Shi, Shen Shi, Si Shi and Hai Shi rotate to the left or right, while those born in Chen Shi, Xu Shi, Chou Shi and Wei Shi rotate to one side.
The third is to distinguish the birth time according to the height of the horizontal line of the phalanx above the fingertip of the ring finger and the little finger. People born at noon, noon, Mao and You are higher than the ring finger stripes, while those born at Yin, Shen, Si and Hai are aligned with the ring finger joints stripes, while those born at Chen, Xu, Ugly and Wei are lower than the ring finger stripes.
The fourth method is to distinguish the time of birth by the order of siblings and the sequence of teeth. For those who were born at noon, noon, Mao and You, most of the males were 1, 4, 7, and most of the females were 2, 5, 8. For people born in Yin, Shen, Si and Hai, most of them have 3, 6 and 9 children, while most of them have 1, 4 and 7 children. People born at Chen, Xu, Chou and Wei are mostly second, fifth and eighth births for men and third, sixth and ninth births for women.
The fifth is to distinguish the time of birth according to the number of brothers and sisters. Those born in four hours are only children or two brothers and sisters, those born in four hours are three or five brothers and sisters, and those born in four hours are only children or three years later than brothers and sisters of the same age.
Due to the family planning policy, some methods have become less accurate in China; Geographical factors that affect the accuracy of time, such as the longitude of birthplace. There are also social factors. For example, during the period from 1986 to 1992, the national daylight saving time was implemented. From May to September in these six years, the clock was advanced by 1 hour.