TheAztec or Mexica calendaris the calendar system that was used by the Aztecsas well as other Pre-Columbian peoples of centralMexico. It is one of theMesoamerican calendars, sharing the basic structure of calendars from throughout ancient Mesoamerica. The calendar consisted of a 365-day calendar cycle called xiuhphualli(year count) and a 260-day ritual cycle called tnalphualli(day count). These two cycles together formed a 52-year “century, ” sometimes called the “calendar round”. Thexiuhphualliis considered to be the agricultural calendar, since it is based on the sun, and thetnalphualliis considered to be the sacred calendar. Limited Mintage Of 333 Pieces Worldwide. Country: Cook Islands &####127464;&####127472. Weight: 3 Oz – 93.3g. Finish: ANTIQUE FINISH AND ULTRA HIGH RELIEF. Mintage: 333 Pcs Worldwide.