On 12.19.9.16.19; tzolkin = 10 Cauac; haab = 12 Muan
Michael Everson wrote:

> For those of you using Mac OS X, the good folks at Wündermoösen
> (http://www.wundermoosen.com) have a marvellous little utility called
> Calendar X which calculates everything in all the calendars including
> the Mayan one, using Mayan glyphs too.

Emacs runs everywhere, and its calendar calculates mayan dates too.
Though, it does not have the mayan glyphs.

The Emacs calendar has been written by E.M.Reingold,
coauthor of the book Calendrical Calculations, which
gives details of a lot of calendars.

Cheers
P.