Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Thursday December 9, 1529 is:
Xihuitl:
solar year
11 - Calli (house)
Long Count:
Mayan calendar
11.15.9.17.5
Xiuhpohualli:
365-day calendar
2 - Atemoztli (XVII)
(Correlation: Alfonso Caso [adjust])
The significance of this day
Aztec facts
In the years after the conquest of Mexico, the xiuhpohualli (solar calendar) became tied to the Julian calendar as used by the Spaniards. This effectively introduced a leap year to the Aztec calendar every four years (this site provides the pre-conquest calendar).
Day Coatl (Snake) is governed by Chalchihuitlicue as its provider of tonalli (Shadow Soul) life energy. Coatl is the day of the snaking river that always changes without changing. It signifies the fleeting moment of eternal water. A good day for humility, a bad day for acting on self-interests.
The thirteen day period (trecena) that starts with day 1-Ocelotl (Jaguar) is ruled by Quetzalcoatl. This trecena represents brilliance and clarity during a profound eclipse of the light. The principal influence of this time is the divine Whirlwind: to stand in its path calls down destruction; to stand in its eye calls down creation. These are good days to withdraw into the solitude of contemplation and self-discipline; bad days to traffic with those on another path. In the center of it all, the warrior strives to be the mirror rather than the reflection.

