411 REFERENCE · Wikibooks
Feng Shui/Setting Up A Geomantic Chart/Year And Cycle
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The Years and Cycles are divided into 3 Eras of 60 years each. Each 60 year cycle is based on the Chinese Hsia Calendar (夏历).
Upper Era: 1864
Middle Era: 1924
Lower Era: 1984
The Eras are then divided into 3 cycles each, and each cycle lasts 20 years
Cycle 1: 1864
Cycle 2: 1884
Cycle 3: 1904
Cycle 4: 1924
Cycle 5: 1944
Cycle 6: 1964
Cycle 7: 1984
Cycle 8: 2004
Cycle 9: 2024