Aztec and Maya Calendar
In the tonalpohualli, the sacred Aztec calendar, Sunday September 16, 1956 is:
Xihuitl:
solar year
9 - Tecpatl (flint knife)
Xiuhpohualli:
365-day calendar
12 - Atemoztli (XVI)
Long Count:
Mayan calendar
12.17.2.16.10
(Correlation: Alfonso Caso - Nicholson's veintena alignment [adjust])
The significance of this day
Day Itzcuintli (Dog, known as Oc in Maya) is governed by Mictlantecuhtli, God of Death, as its provider of tonalli (Shadow Soul) life energy. Itzcuintli is the guide for the dead, the spirit world's link with the living. Itzcuintli is a good day for funerals and wakes and remembering the dead. It is a good day for being trustworthy, a bad day for trusting others of questionable intent.
The thirteen day period (trecena) that starts with day 1-Cuetzpalin (Lizard) is ruled by Itzlacoliuhqui. The 13 days of this trecena are governed by the meting out of irrational rewards and punishments. These are 13 days of confusion, a time when the noble and ignoble have equal chance to be raised up or thrown down. The warrior must be like the lizard, who is not hurt from a high fall but, instead, immediately climbs back to its perch. These are good days to keep out of sight; bad days to attract attention.
Micky Rourke was born on day 7-Itzcuintli.
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.