| ▲ | cornholio 4 hours ago | |
Im still unclear how they determined the constant to convert from long mesoamerican to GMT. What common reference event could allow syncing these calendars to a +/- 3 day precision? I would guess some solar eclipse pattern visible from both sides of the Atlantic? | ||
| ▲ | apothegm 4 hours ago | parent | next [-] | |
They knew about and could identify solstices, which gives you day of the year. So then it’s just a matter of matching years, which can be done on the basis of things like comets. Supernovae could also play a factor. Or using tree rings to identify years mentioned as having droughts or floods. Probably a bunch of other things we haven’t thought of. | ||
| ▲ | gucci-on-fleek 3 hours ago | parent | prev | next [-] | |
The Wikipedia page linked in the article [0] has a plausible-sounding explanation. [0]: https://en.wikipedia.org/wiki/Mesoamerican_Long_Count_calend... | ||
| ▲ | nraynaud 3 hours ago | parent | prev [-] | |
I guess in modern time we can compute eclipses from the past? | ||