How to calculate the social day?

In ancient times, the country was a day to worship the land gods, usually on the fifth day after beginning of spring beginning of autumn. Clubs are divided into spring clubs and autumn clubs. It is wrong for some people to regard the vernal equinox and autumnal equinox as spring clubs and autumn clubs. In fact, the Spring Festival community is the fifth May Day after beginning of spring, and the autumn community is the fifth May Day after beginning of autumn.

The calculation method of Spring Festival Society is the second May Day before Tomb-Sweeping Day. Therefore, the Spring Festival is usually the first ten days in Tomb-Sweeping Day.

According to the custom of sacrifice, if someone died in the family last year, it is necessary to worship the new mountain and go to the new grave in front of the "Spring Society", which is called "the new mountain does not pass the society". There are two reasons: one is to avoid the big day of offering sacrifices to the land gods and meeting guests; Second, Yan Luowang "observed" the new ghosts' yearning for their loved ones, and "chartered" their souls to enjoy the sacrifice of their loved ones in the sun before the "Death Gate" was opened. This is a very kind arrangement, which promotes filial piety, because "being cautious to the end" is one of the ancient moral accomplishments.

Calculation method of social day: the fifth day after beginning of autumn, that is, check the days of the lunar calendar, such as February 7, 20 10, which is the Wuzi Day of Ding Chou Yue, and the ugly year of December, which is the first day after beginning of spring, and then calculate February 17 as the second day, which is the Wuzi Day. February 27th is the third Wushen Day, which is Wushen Day. March 9 is the fourth May Day, which is May 5. March 19 is the fifth May Day, which is May Day.

Be careful not to confuse e with e, e is heavenly stem: a, b, c, d, e, f, g, Xin, n, q, etc.

X is the earthly branch: twelve earthly branches such as Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai.

The symbols that cooperate with each other to form a calendar, that is, the so-called Gregorian calendar 20 10 February 17 equals the ugly year of the lunar calendar.