19 19 is the year of 1911? How is it calculated?

No, 19 19 is a normal year or the last year of the lunar calendar (Year of the Sheep).

Traditionally in China, a year is marked by dry branches. "Dry" means ten days of dryness: A, B, C, D, E, G, Xin, Ren and Gui, and "dry" means twelve dry branches: Zi, Ugly, Yin, Mao, Chen, Si, Wei, Shen, You and Xu. Ten-stem rhizome is combined with twelve branches in turn (single and double), namely Jiazi, Obo, Bingyin, Dingmao and Guihai, followed by Jiazi, Obo, 12 and 10. The least common multiple is 60, so it is 10 and 65438+. This is a bit complicated and difficult to remember, so the ancients thought of using animals to represent complex earthly branches, that is, the zodiac. Rats, ugly cows, yinhu, maotu, dragons, snakes, afternoon horses, sheep, monkeys, chickens, dogs and pigs. Chronology of the zodiac is a common folk calendar method, which matches the earthly branches in the year of the zodiac.