Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Sunday October 21, 2012 is:
(1 -) Malinalli (grass)
13 - Tecpatl (flint knife)
Lord of the Night
1 - Nenmontemi (-)
(Correlation: Alfonso Caso - Nicholson's veintena alignment [adjust])
The significance of this day
This is the first of the nemontemi (five unlucky days) at the end of a xihuitl.
Day Quiahuitl (Rain) is governed by Tonatiuh, the Sun God, as its provider of tonalli (Shadow Soul) life energy. Quiahuitl is a day of relying on the unpredictable fortunes of fate. It is a good day for traveling and learning, a bad day for business and planning.
The thirteen day period (trecena) that starts with day 1-Malinalli (Grass) is ruled by Mayahuel, Goddess of the Maguey and Pulque. These are 13 days of intoxication, infatuation, excitement and passion: it is a time of excesses, when moderation is impossible, and so is often a time of disastrous consequences. This trecena signifies those times when we are incapable of protecting ourselves from high emotions. It is a time when affairs of war and affairs of the heart are born without thinking. These days are clouded in confusion: only the most self-disciplined warrior can suffer an excess of success without incuring sudden loss. These are good days to bind the community together; bad days to sow discord and discontent.
Lenny Kravitz was born on day 8-Quiahuitl.
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).