Pre-Columbian Maya interest in the waxing and waning of the Moon is well documented. This rare example of interdisciplinary scholarship brings together a deeply penetrating knowledge of positional astronomy and Maya hieroglyphic writing, two highly disparate areas of study, and synthesizes them into a thorough interpretation of the relationship between astronomical concepts in the Maya codices and monumental inscriptions. Prompted by the recent discovery of the Xulum 10K-2 lunar table, this volume is a logical follow-up to work published in 2011 by the Brickers, "Astronomy in the Maya Codices." It is a comprehensive study of the Maya lunar calendar. Illus.