Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Monday December 17, 1990 is:
Xihuitl:
solar year
5 - Acatl (reed)
Long Count:
Mayan calendar
12.18.17.12.0
Xiuhpohualli:
365-day calendar
7 - Tozoztontli (IV)
(Correlation: Alfonso Caso [adjust])
The significance of this day
Aztec facts
La Malinche, or Doña Marina, was an Aztec woman who became an essential partner for Hernán Cortés in his conquest of the Aztec empire. Doña Marina's Aztec name was Malinalli, after her birthday. Cleary, she acted upon the significance of this day.
Day Xochitl (Flower) is governed by Xochiquetzal, Flower Feather, as its provider of tonalli (Shadow Soul) life energy. Xochitl is a day for creating beauty and truth, especially that which speaks to the heart who knows it will one day cease to beat. Xochitl reminds us that life, like the flower, is beautiful but quickly fades. It is a good day for reflection, companionship and poignancy; it is a bad day for repressing deep-seated wishes, desires and passions.
The thirteen day period (trecena) that starts with day 1-Itzcuintli (Dog) is ruled by Xipe Totec, Lord of Shedding, god of seedtime. These are 13 days of devotion, companionship, self-sacrifice and love. This trecena points to the eternal conflict that tears at every human being: suspended between two great communions, love and mysticism, each of us strives to survive being swallowed whole by either. On the one hand, the painful shedding of illusions, and on the other, the pleasurable creation of illusions. What ever your decision during this time, you will find favor and advancement. These are good days for commemorating the dead; bad days for clinging to the living.

