Exactly why did the Mayan calender end Dec. 21, 2012?

Master Dex?

When does this apocalypse get underway? It’s a quarter past midnight and nothing has happened yet.

Sure, but the current Dec. 21 “end” isn’t astronomy related any more than the adding of another digit after Dec. 31, 999 was.

Um, yeah. Just my pet name for him during our S&M bondage sessions.

Neener! Neener! Neener!
~vow

Hence the song Party Like It’s 12.19.19.18.19

Am I dead?

Nope, you are just stuck in a deep dark hole created by dwarves.

You would be thinking of Moria

Nope, she’s the longest running human associate of the X-Men and was Professor Charles Xavier’s colleague, confidante, and also once his fiancée.

(6) The calender maker’s boss came along, and said, “Zytlqutozacl! The crop report are due, and we need the demographics shift projection from the increases of human sacrifices! Why are you banging out a calender for hundreds of years from now?”

I thought that’s what they called the wind…

All I know is I just met a girl named Moria.

How do you solve a problem like Moria?

Me too, but upon looking around, it appears that they call wind Mariah.