 The fourteenth 13-day period of the "tonalpohualli" ritual calendar started with the day "ce itzcuintli" (1-dog) and people, especially rulers, were fated to be especially lucky if born on this day.The tenth day of the "xiuhpohualli" 20-day agricultural calendar, "itzcuintli" (dog), was governed by Mictlantecuhtli, the grim lord of the dead.In the Postclassic, when an Aztec commoner died he had to pass through each of the nine levels of Mictlan, the underworld.