Did the ancient Maya put 3 dates on the 2012 Monument 6 for cross-referencing?

What’s this I see? In my search to clarify the meaning of the Mayan Haab month K’ank’in (also spelled kankin), I did a Google search for, “uniiw kankin haab.” One of the items that came up was for a Google book by Geoff Stray called, “2012 in Your Pocket.” It looks like a good and comprehensive read that includes an explanation of the ancient Maya, the Mayan calendars, and 2012.

However, I wonder if the author understands why there are two dates, 3rd Uniiw and 4 Ahaw, because he says that Monument 6 in the Tortuguera Mayan ruins, which was erected in AD 669, “is inscribed with glyphs from the three calendars, cross-referencing the end date in 2012.”

Cross-referencing?

Does he think the Maya put in the other two dates with the Mayan Long Count Calendar date of 13.0.0.0.0 Bak’tuns (the December 21, 2012 in our calendar) to cross-reference the date with the other two Mayan calendars, the Haab and T’zolkin? More tomorrow …