This is the sketch of one of the gigantic stelae of Quiriguá in today's Guatemala shown earlier in Lecture 5.
The date (1,418,400 days since 12 August 3113 BC = 24 January 771 AD) is given in the secular and sacred calendars and as a day count from the beginning of the Mayan calendar. The sketch replaces the interpretation of Lecture 5 with the accurate day count.
Adapted from G. Ifrah, G. (1999)