Anybody know anything about Adam's Calander?

I somehow misread the words "Adam's Calendar" as "Adam's Chandler" and I thought you misspelled Adam Sandler's name lol

He gave me some to hand out while I was traveling.

I googled it. It's in South Africa, many dispute that age estimate, and I for one can't see how you could derive a date from it to say anything about it's "accuracy." I mean, south is south and north is north until the continent drifts, right?

I have a buddy that created a calendar like that. Its pretty cool. He goes by the seasons and the calendar is accurate every year.

Is this the north Korean calander