Newly discovered Mayan calendar goes way past 2012

Rather, the painted room in the residential complex at Xultun was likely the place where the town scribe kept records, scrawling computations on the walls in an effort to find “harmony between sky events and sacred rituals”, said a study published today in the journal “Science”. The hieroglyphs date back to the ninth century, making them hundreds of years older than the calendars in the Maya Codices, which were recorded in bark-paper books from 1300 to 1521.
Some appear to be the 365-day solar calendar, the 584-day cycle of the planet Venus and the 780-day cycle of Mars, said archaeologist William Saturno of Boston University, who led the exploration and excavation.