Upvote:2
The Chinese traditional lunar calendar has a cycle of sixty years. Within this there are a twelve year sub-cycle, during which the year of the sheep, for example, recurs after twelve years.
As Semaphore commented below, "The 12 animal signs were associated with the 12 earthly-branches
, which combines with 10 celestial-stems
to form the sexagenary stems-and-branches
cycle". This also meant there were 60 uniquely named years.
The Maya Calendar has 19 Haab' months and a cycle of 52 Haab' years or 18,980 days.
The Long count calendar has a cycle of 63,081,429 years.
Table of Long Count units
unit period Days Approximate
Solar Years
1 K'in 1
1 Winal 20 K'in 20
1 Tun 18 Winal 360 1
1 K'atun 20 Tun 7,200 20
1 B'ak'tun 20 K'atun 144,000 394
1 Piktun 20 B'ak'tun 2,880,000 7,885
1 Kalabtun 20 Piktun 57,600,000 157,704
1 K'inchiltun 20 Kalabtun 1,152,000,000 3,154,071
1 Alautun 20 K'inchiltun 23,040,000,000 63,081,429