Early civilizations of mexico used the solar portion of the 52-year calendar round to

The answer is for their to plan for their farming. The Aztec or Mexica calendar is the date-book framework that was utilized by the Aztecs and also other Pre-Columbian people groups of focal Mexico. It is one of the Mesoamerican schedules, sharing the fundamental structure of logbooks from all through antiquated Mesoamerica. The calendar comprised of a 365-day date-book cycle called xiuhpohualli (year tally) and a 260-day custom cycle called tonalpohualli (day check). These two cycles together shaped a 52-year "century," here and there called the "timetable round". The xiuhpohualli is thought to be the rural schedule, since it depends on the sun, and the tonalpohualli is thought to be the consecrated timetable.