laugh if you want, the Mayans were computing 5000 year cycles of stars and planets while the rest of the world was getting excommunicated for implying the sun may not revolve around the earth
...and wiping their butts with their bare hands. So if the world goes poof, what happens to my January naked puts?
it may not happen Dec 21, but every scientist will tell you it's going to happen someday, so better get use to it
http://www.astrologyforganntraders.com.au/blog.html you could get more up to date charts, here is a person using planets and cycles