No the codex does not predict anything There is a history of German researchers INTERPRETING the same picture as the end of the world since it all started with Forstemann circa  This Mayans predict the end of the world thing was given the circa  date by Michael D Coe and popularized by John Major Jenkins It is a simple history and you should be able to get it straight Repeat Thirteen constellations along the ecliptic NOT twelve Also the constellations are of unequal length and so  years is not right Try    Mardyks