The Maya are famous for their complex, intertwined calendric systems, and now one calendar, the Maya Long Count, is empirically calibrated to the modern European calendar, according to an international team of researchers.
Fuente : http://www.eurekalert.org/pub_releases/2013-04/ps-...
Fuente : http://www.eurekalert.org/pub_releases/2013-04/ps-...