Here is the catch on prophecies of any kind, like Mayan calendars, Indian cycles and such:
If prophecies are part of a religion, lets say Judaism as an example, all Jews work towards the fulfillment of said prophecy, right? For example, having their own country as prophesied. They run around for a couple of thousand years -and finally succeed to plant their flag into a piece of land (that already had owners), they all said: " It was promised by our god, and behold it came true!". It's hilarious!
Its like predicting a meal, then driving to MC Donald's and order it, when it is served, the prophecy was fulfilled. LMAO!
Now lets say the Indian priests announce a "golden age". All fellow Hindus start building temples and cities -voila! Lots of shiny buildings! The priests were right! Meal ordered = meal served.