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| From azteccalendar.com |
When we look at the calendar systems around the world, both
past and present, we generally find an astronomical foundation to them. In a world full of chaos and disaster, it
only makes sense that our ancestors might try to harmonize their lives to the
unwavering cycles of the heavens. From
the Greeks to the Egyptians to the Mesoamericans, man has tried to mimic the
order in the heavens with their calendars.
We are all familiar with the 365 day solar calendar, but the
cosmic influence on ancient calendars far exceeds the cycles of the sun. One such example would be the 260 day
calendar known to the Maya as the Tzolkin. The Aztecs and Toltecs of central Mexico knew
it as their “Book of Days.” This
calendar is a prime example of the Mesoamerican’s attempt to unite human and
heavenly cycles. For instance, 260 days
is the approximate length of human gestation.
Meanwhile, two Tzolkin periods
(520 days) measure 3 eclipse periods.
This sacred calendar was in use long before the Maya or
Toltecs even established themselves culturally.
Nearly 3,000 years ago the 260 day calendar was in use by the Olmecs,
who are credited for using the calendar alongside the 365 day solar
(agricultural) calendar. Their influence
spans even today as some devout groups of Maya still follow the old traditions.
So how did the Tzolkin
work. Simple. The days were marked by a number and a day
sign. There were 20 day signs that ran
alongside the number 1 through 13. With
this system, it took 260 days for the calendar to run through its cycle of
numbers and day signs before the first day sign aligned with the number 1
again.
The day signs differ slightly between the Nahuatl-speaking
people of central Mexico and the Maya.
In fact, there are even slight variations between Mayan
sub-cultures. But for illustration
purposes, and in keeping with simplicity, I'll share the 20 day signs of the Nahuatl Book
of Days, which are: Crocodile, Wind, House,
Lizard, Serpent, Death, Deer, Rabbit, Water, Dog, Monkey, Grass, Reed, Jaguar,
Eagle, Vulture, Movement, Flint, Rain, Flower.