A baktun /ˈbɑːktuːn/[1] (properly bʼakʼtun [ɓakʼtun]) is 20 kʼatun cycles of the ancient Maya Long Count Calendar.
The Classic period of Maya civilization occurred during the 8th and 9th baktuns of the current calendrical cycle.
The current baktun started on 13.0.0.0.0 – December 21, 2012 using the GMT correlation.
Archaeologist J. Eric S. Thompson stated that it is erroneous to say that a Long Count date of, for example, 9.15.10.0.0 is in the “9th baktun”, analogous to describing the year 209 AD as in the “2nd century AD”.
[citation needed] Today, 19:15, Sunday, February 16, 2025 (UTC), in the Long Count is 13.0.12.6.0 (based on the GMT correlation).