Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Saturday October 16, 2021 is:
Xihuitl:
solar year
9 - Calli (house)
Xiuhpohualli:
365-day calendar
18 - Izcalli (XVIII)
Long Count:
Mayan calendar
13.0.8.17.1
(Correlation: Alfonso Caso - Nicholson's veintena alignment [adjust])
The significance of this day
1-Cipactli is the first day of new tonalpohualli, or 260-day religious calendar. It is an excellent day for beginnings or celebrations like a singing feast (cuicuicaliztli).
Day Cipactli (Crocodile, known as Imix in Maya) is governed by Tonacatecuhtli, Lord of Nurturance, as its provider of tonalli (Shadow Soul) life energy. Cipactli is an auspicious day, signifying advancement and honor. It depicts energy and work, rewards and recognition. A good day for beginnings.
The thirteen day period (trecena) that starts with day 1-Cipactli (Crocodile) is ruled by Tonacatecuhtli, Lord of Nurturance, the primordial god of creation and fertility. Cipactli is god of the land, the great earth monster, floating on the sea of stars. This is the first trecena of the sacred year. The 13 days of this trecena are governed by the primordial urge to create order out of chaos. The three means by which the Old Ones established order are still our most important treasures: speech, agriculture, and the family. The lineage of thought runs from seed to fruit to seed: these are good days to participate in the community; bad days for solitude.
Aztec facts
In the years after the conquest of Mexico, the xiuhpohualli (solar calendar) became tied to the Julian calendar as used by the Spaniards. This effectively introduced a leap year to the Aztec calendar every four years (this site provides the pre-conquest calendar).