A baktun is 20 katun cycles of the ancient Maya Long Count Calendar. It contains 144,000 days or 400 tuns or nearly 400 tropical years. The Classic period of Maya civilization occurred during the 8th and 9th baktuns of the current calendrical cycle. The current (12th) baktun will end on December 20, 2012 (using the GMT correlation). The 13th baktun will be completed (13.0.0.0.0 in Long Count notation) on December 21, 2012, which also marks the beginning of the 14th baktun, as such a term is usually used among Mayanists. The Maya calendar is actually a system of distinct calendars and almanacs used by the Maya civilization of pre-Columbian Mesoamerica, and by some modern Maya communities in highland Guatemala. ... Mesoamerican chronology The chronology of Pre-Columbian Mesoamerica is usually divided into the following eras: Paleo-Indian Period c. ... is the 354th day of the year (355th in leap years) in the Gregorian calendar. ... December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar. ...
J. Eric S. Thompson states that when a Long Count of say 9.15.10.0.0 is placed in the 9th baktun, we are almost certainly committing an error. However, that practice is so well established among Maya epigraphers and other students of the Maya that to change it would cause more harm than its perpetuation.[1]
The Maya calendar is actually a system of distinct calendars and almanacs used by the Maya civilization of pre-Columbian Mesoamerica, and by some modern Maya communities in highland Guatemala. ... Tzolkin (in the revised Guatemala Mayan languages Academy orthography which is now preferred, formerly and commonly tzolkin) is the name bestowed by Mayanist scholars upon the version of the 260-day Mesoamerican calendar which was used by the Maya civilization of pre-Columbian Mesoamerica. ... The Maya Haab calendar is a 365-day solar calendar whose dates indicate the position of the Sun at noon relative to the zenith over the Yucatan peninsula. ...
Finley, Michael (2002). Note on the Maya Calendar. The Real Maya Prophecies: Astronomy in the Inscriptions and Codices. Maya Astronomy. Retrieved on 2007-06-18.
Miller, Mary; and Karl Taube (1993). The Gods and Symbols of Ancient Mexico and the Maya. London: Thames & Hudson. ISBN 0-500-05068-6.
Thompson, J. Eric S. (1971). Maya Hieroglyphic Writing; An Introduction, 3rd edition, Civilization of the American Indian Series, No. 56, Norman: University of Oklahoma Press. ISBN 0-806-10447-3.
Voss, Alexander (2006). "Astronomy and Mathematics", in Nikolai Grube (Ed.): Maya: Divine Kings of the Rain Forest, Eva Eggebrecht and Matthias Seidel (assistant Eds.), Cologne: Könemann Press, pp.130–143. ISBN 3-8331-1957-8. OCLC 71165439.
For most of the people this is -3114, but with the Jesus birth problem, I think this -3122.
For the value of the "Baktun", this is 144000, "Katun" 7200, "Tun" 360, "Uinal" 20 and "Kin" 1.
If you use 13.0.0.0.0 (Mayan great cycle), that means: 13 * 144000 (first number in the sequence is Baktun) you obtain: 1 872 000 days for the great cycle, but this a Mayan days count.
The thirteen baktuns and 20 katuns represent a perfect fractal of the 260-unit fourth-dimensional timing matrix spread out as a chronotopology called history, where each katun represents one of 260 kin.
The baktuns represent a set of waves (morphogenetic fields), each with 20 lesser waves rising in a pitch of climax during the thirteenth and final baktun, AD 1618-2012.
The thirteen baktuns is the time allotted to the human being to run its course of trial and error, culminating in the error in time, the creation of the 12:60 Gregorian civilization that captures and dominates the entire thirteenth baktun.