Mayan_Tzolkin

Mayanists have bestowed the name Tzolkin (or Tzolk'in, in the revised orthography which is now preferred) on the Maya version of the Mesoamerican 260-day calendar. The word was coined based on the Yucatec language, with an intended meaning of "count of days" (Coe 1992). The actual names of this calendar as used by the pre-Columbian Maya are not known. The Aztec calendar equivalent was called by them Tonalpohualli, in the Nahuatl language.