Is there really a year when the moon is cloudy and the sun is cloudy? So what's today?

In a cloudy year, the moon is cloudy and the sun is cloudy, which is the title of a person's birth attribute in China's numerology mathematics. Our ancient ancestors invented two systems long ago, the ten heavenly stems and the twelve earthly branches, and combined the two systems, one dry and one branch. When all the branches are matched, it is exactly 60 cycles a week, and the matching trunks and branches are used to record and infer the time. Later, mathematicians of Yin and Yang endowed the ten heavenly stems and twelve earthly branches with different attributes of Yin and Yang and five elements. The properties of dry yang in ten days are: a, c, e, g, n; Yin attributes are: B, D, Ji, Xin, Gui; The properties of earthly branches are: zi, yin, Chen, noon, Shen and Shu; Yin attributes are: ugliness, hair, intelligence, health, unity and sea. In this way, when we use the year, month, day and hour, there will be different yin and yang attributes. When all the attributes happen to be in the shade of the month and day, there will be what the landlord said. For example, someone was born at 20 13 12: 00 on February 30th. Let's check the almanac. Last year, 20 13 was a year of ignorance, December was an ugly month, and New Year's Eve was a day of sadness and ugliness. In this way, compared with the days of the year, branches and branches are negative. In this way, for fortune tellers, this person is a dark year.