It occurred to me last evening that the editor I use most at work will display a calendar, and will give the dates in a variety of formats, including Hebrew, Islamic, French revolutionary, and, yes, Mayan. So, according to emacs, Thursday December 20 in the Mayan calendar is
Mayan date: Long count = 184.108.40.206.19; tzolkin = 2 Etznab; haab = 1 KankinFriday the 22nd is
Mayan date: Long count = 220.127.116.11.0; tzolkin = 4 Ahau; haab = 3 Kankinand Saturday the 23rd is
Mayan date: Long count = 18.104.22.168.1; tzolkin = 5 Imix; haab = 4 KankinEmacs is a wonderful editor, indeed.