Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Monday January 15, 1537 is:
Xihuitl:
solar year
5 - Tecpatl (flint knife)
Long Count:
Mayan calendar
11.15.17.2.19
Xiuhpohualli:
365-day calendar
1 - Nemontemi (-)
(Correlation: Alfonso Caso [adjust])
The significance of this day
Aztec facts
The Aztecs did not use a leap year correction but they knew the length of a solar year is neither 365 nor 365.25 days. Presumably they kept some count of days to register astronomical events but no evidence of an Aztec Long Count exists.
This is the first of the five unlucky days (nemontemi) at the end of a year (xihuitl). It is better not to carry out any activity during these unfortunate and useless days.
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-Ocelotl (Jaguar) is ruled by Quetzalcoatl. This trecena represents brilliance and clarity during a profound eclipse of the light. The principal influence of this time is the divine Whirlwind: to stand in its path calls down destruction; to stand in its eye calls down creation. These are good days to withdraw into the solitude of contemplation and self-discipline; bad days to traffic with those on another path. In the center of it all, the warrior strives to be the mirror rather than the reflection.