On: The Mayan calendar might represent a longer timesc...

[aeturnum]

Yes, absolutely. The Maya are generally thought to have been 'around'[1] for ~1450 years.

[1] Of course, Mayan people still exist (and continue to carry their culture), but this is about the civilization.

[andrewshadura → aeturnum]

They’re properly called Maya people. The word Mayan only refers to the ancient civilisation.

[aeturnum → andrewshadura]

Ah, my bad - thank you for the correction!

[chema → aeturnum]

The Long Count, part of the calendar, was in use until quite recently and may still be used in parts of Guatemala, so there is some continuity.