calendar-mayan-previous-tzolkin-date
calendar-mayan-previous-tzolkin-date is an interactive autoloaded Lisp function in `cal-mayan.el
'.
(calendar-mayan-previous-tzolkin-date TZOLKIN-DATE &optional NOECHO)
Move cursor to previous instance of Mayan TZOLKIN-DATE.
Echo Mayan date unless NOECHO is non-nil.