[sawsalimb]

I believe the Mayans had a 52 year cycle of of some sort incorporated into their calendar-I'll look at my copy of The Mayan Prophecies and get back to you on that,as I'm not sure. FWIW,I also seem to remember something being mentioned about a 52 year lunar eclipse cycle that was somehow related to the Stonehenge site. IF memory serves,the Stonehenge site was supposed to be able to accurately predict lunar eclipses,and I believe that lunar eclipses run on a 52 year cycle(something like that,anyway-more coffee is desperately required at the moment).

[gleeaikin]

If I remember correctly the Aztec “calendar round” included 2 cycles, one the standard year and I think the other was the Venus year. They probably got it from the Mayans. Jews also celebrate a 50 year jubilee year I think when debts are forgiven. Some West African cultures also throw out old wood carvings every 50 years and carve new ones. I new of an American black man who bought a large number of these cast off carvings and had them displayed publicly. Unfortunately the building was burned and all lost.