The Paris Codex (also known as the Codex Peresianus and Codex Pérez) is one of three surviving generally accepted pre-Columbian Maya books dating to the Postclassic Period of Mesoamerican chronology (c. 900–1521 AD).[3] The document is very poorly preserved and has suffered considerable damage to the page edges, resulting in the loss of some of the text. The codex largely relates to a cycle of thirteen 20-year kʼatuns and includes details of Maya astronomical signs.