| Maya Exploration Center Non-profit specialty tour operator offering educational adventures in Mesoamerica. Details of regular and custom organised Chiapas tours. | Calendar Studies Articles on the Gregorian and Julian calendars, the ISO date format, the Julian day number system, the Maya calendar, the Goddess lunar calendar, the Liberalia Triday Calendar and C functions for date conversion; plus software for calendrical conversion. | Palka, Joel Profile of this University of Illinois Chicago Assistant Professor. Research interests include ancient Maya social differentiation, settlement archaeology, and the collapse of Maya civilization. |
