Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Thursday October 13, 1983 is:
Xihuitl:
solar year
10 - Acatl (reed)
Long Count:
Mayan calendar
12.18.10.6.18
Xiuhpohualli:
365-day calendar
5 - 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 last 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 Tecpatl (Stone Knife) is governed by Chalchihuihtotolin, the Jewelled Fowl, as its provider of tonalli (Shadow Soul) life energy. Tecpatl is a day of grave ordeals, a day of trials and tribulations. It is a good day to test one's character, a bad day to rest on one's past accomplishments or reputation. Tecpatl warns that the mind, the spirit, must be sharpened like the glass blade which cuts to the marrow of truth
The thirteen day period (trecena) that starts with day 1-Ollin (Movement) is ruled by Tlazolteotl. This trecena is governed by the goddess of cotton and weaving, of sexuality and childbirth, she who is the eater of sins: it is the sign of the Scavenger, who feeds not on power but on the ills that darken the heart. The rainbow serpent, symbol of pleasure and folly, levitates amidst a shroud of smoke and shadow: these are 13 days of stolen secrets and odd twists of fate. The earth itself shakes: the ills created by shock can sometimes only be cured by greater shock. These are good days for self-purification; bad days for self-gratification.