How to calculate the year of the lunar calendar?

Sixty Jia Zi (sixty Jia Zi, six Jia Zi)?

1, heavenly stems and earthly branches is matched in order, that is, A, B, C, D, E, Ji, G, Xin, Ren, Gui, Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai, from "A" Because there are six groups that start with "A", they are also called "Liu Jia". ?

2. refers to people over 60 years old. ?

3. The 60-star God of Taoist belief, that is, the 60 gods on duty every day. Use heavenly stems and earthly branches's collocation as the name to call these gods.

The lunar calendar is a calendar that takes into account the relationship between the sun, the moon and the earth. The lunar calendar does not consider the movement of the earth around the sun, so the changes of the four seasons have no fixed time in the lunar calendar and cannot reflect the seasons. Unlike the fixed solar year of 365 days or 366 days, the solar year sometimes differs from the lunar year by one month. In order to coordinate the number of days between lunar year and solar year, the "leap method" is used to adjust the total number of days in lunar period to the total number of days in tropic year of solar calendar.

The lunar calendar, also called the lunar calendar, is based on the law that the moon revolves around the earth. Take the moon's orbit around the earth as a month, that is, take the new moon as the basis for determining the calendar month. A month in the lunar calendar is called a "new moon". The first day of each month is a new moon, and the fifteenth day is a new moon. The "new moon" is the average period of the moon's profit and loss. The lunar calendar only looks at the moon, regardless of the tropic of cancer, so it has nothing to do with the four seasons.