Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Sunday July 10, 1955 is:
Xihuitl:
solar year
8 - Acatl (reed)
Long Count:
Mayan calendar
12.17.1.12.16
Xiuhpohualli:
365-day calendar
3 - Tepeilhuitl (XIV)
(Correlation: Alfonso Caso [adjust])
The significance of this day
Aztec facts
The Aztec, Maya and most other mesoamerican people used the same 260-day calendar with an identical correlation. So the Aztec date 1-Cipactli corresponds to 1-Imix for the Maya, etcetera.
Day Cozcacuauhtli (Vulture) is governed by Itzpapalotl as its provider of tonalli (Shadow Soul) life energy. Cozcacuauhtli signifies long life, wisdom, good counsel and mental equilibrium. It is a good day to confront the discontinuities, disruptions, failures and deaths one suffers in life. Cozcacuauhtli is a day for tricking the Trickster.
The thirteen day period (trecena) that starts with day 1-Cuauhtli (Eagle) is ruled by Xochiquetzal. This trecena signifies a time of inspired play: regardless of the sport, this is the time of mastery. All of one's practice and preparation culminates now in an unparalleled conjunction of luck, skill and timing. These are 13 days when gambling on happiness, both your own and others', pays off. These are good days for taking risks; bad days for playing it safe.

