unechartreusesvp
unechartreusesvp t1_j3gdl3g wrote
Reply to comment by orsimertank in Earliest evidence of the use of the Mesoamerican 260-day calendar, ‘centuries earlier than its previously known use in textual records,’ revealed by the orientations of newly-uncovered ruins along Mexico’s southern Gulf Coast by marketrent
The 260 days calendar is exclusively for ritual purposes. It's used in conjunction with other astronomical calendars: Solar calendar of 360 days (plus 5 bad days...) Moon calendar, and also a Venus calendar (this one quite important!)
And other bigger cycles.
The Dresden codex it's a beautiful and rich ritual calendar, really interesting.
unechartreusesvp t1_j3gdvay wrote
Reply to comment by cld1984 in Earliest evidence of the use of the Mesoamerican 260-day calendar, ‘centuries earlier than its previously known use in textual records,’ revealed by the orientations of newly-uncovered ruins along Mexico’s southern Gulf Coast by marketrent
Actually not only sun and moon, but also Venus, and other celestial objects.
Many sites include some astronomical observation points, done of them to keep the solar year calendar in place, like knowing when to add more days to accommodate the 365 solar year in conjunction with the the solstices.