This study examines the relationship between the Long Count and emergent kingship in the central Maya Lowlands. The Long Count was instrumental in the prosperity of lowland Maya kingship during the Classic period (ca. a.d. 250–900), yet its initial application in relation to the emergence of kingship remains poorly understood. We conducted epigraphic, iconographic, and archaeological research at the Maya site of El Palmar, Campeche, Mexico. By integrating traditional and new techniques, including photogrammetry and high-resolution 3D scanning, we studied El Palmar Stelae 20, 45, and 46. Notably, our study of Stela 46 identified a Long Count 8.7.1.0.0 (a.d. 180), which is currently the earliest known Long Count in the Maya Lowlands. Unlike other early monuments, Stela 46 preserves royal events alongside calendar dates. The 3D models revealed previously unknown inscriptions that link royal succession to calendrical events, providing insights into the role of the 260-day divinatory calendar and the Long Count in asserting royal authority through ritual practices. By contextualizing these results within the broader framework of lowland Maya kingship, this research not only elucidates the emergence of El Palmar kingship but also enriches our understanding of regional dynamics during this transformative period.