Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Saturday December 23, 1525 is:
Xihuitl:
solar year
7 - Calli (house)
Long Count:
Mayan calendar
11.15.5.16.18
Xiuhpohualli:
365-day calendar
15 - 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).
8-Tecpatl is the last of eight days in a row specially associated with pulque, the alcoholic beverage made from the fermented sap of the maguey (agave) plant (octli).
Day Tecpatl (Stone Knife) is governed by Chalchihuihtotolin, the Jewelled Fowl, as its provider of tonalli (Shadow Soul) life energy. Tecpatl is a day of grave ordeals, a day of trials and tribulations. It is a good day to test one's character, a bad day to rest on one's past accomplishments or reputation. Tecpatl warns that the mind, the spirit, must be sharpened like the glass blade which cuts to the marrow of truth
The thirteen day period (trecena) that starts with day 1-Ozomahtli (Monkey) is ruled by Patecatl. The 13 days of this trecena are influenced by the quest for cures of all the various ills that befall us: the quest to obtain power that can overcome misfortune lies at the heart of the warrior's purpose. The transformation of poison into medicine, and evil into good, is an art whose expression must be tailored to the field of battle. These are good days to fashion a war shield and collect articles for your medicine bundle; bad days to allow infections to fester.