Sexagenary cycle
About the Sexagenary cycle
The sexagenary cycle pairs ten heavenly stems with twelve earthly branches to produce 60 combinations, used to name days since the Shang dynasty and later years. Each branch corresponds to one of the twelve zodiac animals, and each stem to one of five elements, so a year might be a Fire Horse. The cycle is also used in Japan, Korea and Vietnam.
Related Entries
Gregorian leap year rule
1582A Gregorian year is a leap year if it is divisible by 4, except century years, which must be divisible by 400. So 1600 and 2000...
Metonic cycle
c. 432 BCE (Meton)The Athenian astronomer Meton observed that 19 solar years are almost exactly 235 lunar months, so moon phases recur on nearly...
Sothic cycle
Because the Egyptian civil year had exactly 365 days, the heliacal rising of Sirius, Sopdet in Egyptian, drifted through it by a...
Calendar Round
The Calendar Round is the period after which a given combination of the 260-day Tzolk'in and 365-day Haab' recurs, 18,980 days or...