Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Tuesday July 18, 2045 is:
Xihuitl:
solar year
7 - Calli (house)
Long Count:
Mayan calendar
13.1.13.0.17
Xiuhpohualli:
365-day calendar
14 - Quecholli (XV)
(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 Ollin (Movement) is governed by Xolotl as its provider of tonalli (Shadow Soul) life energy. This is an auspicious day for the active principle, a bad day for the passive principle. Ollin is a day of the purified heart, signifying those moments where human beings may perceive what they are becoming. A good day for transmutation, which arrives like an earthquake that leaves in its wake the ruins of rationality, order and the preconceived.
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.

