and division tables from the temple libraries of nipper and sipar and from the library of Ashurbanipal in Nineveh are based upon the number 12 million 960,000 analyzing this number and its significance he concluded that it could be related only to the phenomenon of the precession and that the Sumerians knew of the great year of twenty five thousand nine hundred and twenty years this is indeed fantastic astronomical sophistication at an impossible time just as it is evident that the Sumerian astronomers possessed knowledge that