Katana VentraIP

Sexagenary cycle

The sexagenary cycle, also known as the stems-and-branches or ganzhi (Chinese: 干支), is a cycle of sixty terms, each corresponding to one year, thus a total of sixty years for one cycle, historically used for recording time in China and the rest of the East Asian cultural sphere and Southeast Asia.[1][2] It appears as a means of recording days in the first Chinese written texts, the Shang oracle bones of the late second millennium BC. Its use to record years began around the middle of the 3rd century BC.[3] The cycle and its variations have been an important part of the traditional calendrical systems in Chinese-influenced Asian states and territories, particularly those of Japan, Korea, and Vietnam, with the old Chinese system still in use in Taiwan, and in Mainland China.[4] In India, the Dai-Ahom (descendants of Dai ethnic minority of Yunnan who migrated to Assam in 13th century) also used the sexagenary cycle known as Lak-Ni.[5][6]

"Xinwei" redirects here. For the town in China, see Xinwei, Meizhou.

This traditional method of numbering days and years no longer has any significant role in modern Chinese time-keeping or the official calendar. However, the sexagenary cycle is used in the names of many historical events, such as the Chinese Xinhai Revolution, the Japanese Boshin War, the Korean Imjin War and the Vietnamese Famine of Ất Dậu, Tết Mậu Thân. It also continues to have a role in contemporary Chinese astrology and fortune telling. There are some parallels in this with the current 60-year cycle of the Hindu calendar.

1967 = 60 × 32 + 47.

N for the year: (5y + [y/4]) mod 10, y = 0–39 (stem); (5y + [y/4]) mod 12, y = 0–15 (branch)

N for the Gregorian century: (4c + [c/4] + 2) mod 10 (stem); (8c + [c/4] + 2) mod 12 (branch), c ≥ 15

N for the Julian century: 5c mod 10, c = 0–1 (stem); 9c mod 12, c = 0–3 (branch)

(斗母元君)

Doumu

(太歲)

Tai Sui

Chinese calendar

Chinese era name

known in Korean as the "Imjin War", after the "Yang Water (im) Dragon (jin)" year 1592.

Japanese invasions of Korea (1592–1598)

(Japan), named after the "Yang Wood (kō) Rat (shi)" year 1924. One of the last examples of general usage of the cycle in Japan.

Koshien Stadium

Lunisolar calendar

– Vietnamese name of the event, "Tết Mậu Thân Event", named after the "Yang Earth (mậu) Monkey (thân)" year 1968.

Tet Offensive

(China), named after the "Yin Metal (xin) Pig (hai)" year 1911[21]

Xinhai Revolution

. Hong Kong Observatory. Archived from the original on 2018-11-04. Retrieved 2018-11-04.

"Heavenly Stems and Earthly Branches"

An Open Source application and implementation of Gan & Zhi as well as Jeiqi

Ganzhi.io