You can see PART 1 and PART 2 if you didn't.
Mayan calendar were recalculated on our calendar and 21st December 2012 is marked as an important date. Then, for the Mayas began six big cycle, and many believe that great changes will happen to human consciousness.
The grand cycle is the most important period of the Long Count. The Mayans were marked present as time between the worlds. The fifth great cycle of the Mayan calendar was commenced on 11 August 3114th BC. The date is apparently precisely determined by Thompson projection, day by day, in order to connect the Maya and Gregorian calendar.
Time in the Long countdown were divided into: 1 ch (1 days), tun (360 days), katun (7,200 days or 20 years), baktun (144,000 days or 392.3 years), piktun (20 baktuns or 2.88 million days) , kalabtun (20 piktuna or 57.6 million days), kinčiltun (20 kalabtuna day or 1.152 billion), alautun (20 kinčiltuna 23.04 billion, or days) and hablatun (20 460 800 000 000 alautuna or days). Time of 13 baktuns is a great cycle and lasts 1.872 million days or 5128.7 years.
Fifth Great Cycle ends on the winter solstice, 21.12. 2012 when it's a final date 126.96.36.199.0 (read: 13 baktuns, 0 katun, 0 tuna, 0 uniala, 0 kin). The same date has been marked as a starting point of the sixth Big cycle which will last for 13 baktuns.
On the 21 December 2012, say the promoters of the Mayan prophecy, apparently there will be a rare occurrence of a galactic alignment that occurs about every 25,645 years. As a result of the alignment of galaxies, from the center of the Milky Way solar system will splash big wave of cosmic energy and encourage changes in our part of the universe. Then will start sixth great cycle in which the Mayans announce the time of wisdom, harmony, peace, love and return to the natural order of things. Entering a new era, people will reject the technology, time and money will come to the penetration into the fifth dimension. Galaxies will be sync with the rest of the universe. There will be changes in the structure of DNA and transformation of human consciousness.
Video for interested in this topic (it has 18 parts)