The oldest confirmed Mesoamerican Long Count calendar date was recorded on Stela 2 (actually a wall panel) at Chiapa de Corzo, Mexico. The partially preserved inscription displays the date 7.16.3.2.13, corresponding to 36 BCE in our calendar. This significant discovery from a Zoque settlement represents a critical development in Mesoamerican timekeeping technology, predating the earliest known Maya-specific Long Count inscription by more than 300 years. The site, which rose to prominence around 700-500 BCE, served as an important conduit between Olmec and Maya civilizations, suggesting that calendar innovations may have passed from the Mixe-Zoque linguistic area to the Lowland Maya.