60-a subsequence table

"Sixty Jia Zi", also known as "Sixty Hua Jia Zi", was used in ancient China for calendar year, calendar month, calendar day and calendar time. "Sixty Jiazi" is a combination of "ten heavenly stems" and "twelve earthly branches", that is, "Jiazi, Emei, Bingyin, Ding Mao, Chen Wu ……", ending with "Gui Hai" and then starting with "Jiazi". See the figure below for details:

I. heavenly stems and earthly branches

"Sixty Jiazi" is based on "heavenly stems" and "earthly branches", which are ancient symbols of China. "heavenly stems" include "A, B, C, D, E, Ji, G, Xin, Ren and Gui". "Ground branch" includes "Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai".

Second, the chronology of cadres and branches

In the year of trunk and branch, each trunk represents one year, with 60 years as a cycle, and the initial trunk is called "Jiazi", so it is called "Sixty Jiazi"; Because the names of the branches are complicated, they are also called "Sixty Flowers". Therefore, it is customary for later generations to call people over 60 "flower-clad people", while those over 60 are "flower-clad old people".

"Sixty flowers" can be used for chronology, and sixty years is a cycle when used for chronology. As shown in the figure below, the latest Jiazi year in the past is 1984, and the earthly branches of this year can be calculated according to the Jiazi year of 1984, for example, 20 17 years is Ding You.