Since most of these inscription dates at the site were recorded in an abbreviated form known as the "Short Count", which only identified an event within a span of about 260 years, it was difficult to pin down in which particular span an event referred to in the inscriptions occurred.
Da de fleste af inskriptionsdatoer var registreret på stedet på en forkortet form, kendt som den "korte tælling", der kun identificerede en begivenhed inden for en periode på omkring 260 år, var det svært at afgøre præcis hvilken periode, det drejede sig om.