(1) Mayan doomsday theoryNov 1, 2012

The Mayan used multiple calendars (base 20) based on the Sun, the Moon, the planet Venus or the Eclipse. They used the Tzolkin calendar (260 days) for ceremonial and religious events, the Haab calendar (18*20+5=365 days) for agriculture, and the Long Count calendar of 5125 year cycle (13*20*20*18*20 days) for describing the eternal history. The starting point of the Long Count calendar was considered to be August 11, 3114 B.C. The era of about 3100 B.C. was time when Egyptian and Mesopotamia civilizations developed. We wonder if Mayan civilization started during this era. The end date of the Long Count calendar will be on December 20, 2012, and the winter solstice will coincide with the next day of the end date. Some people believe in the 2012 Doomsday theory, which states that the God will descend from sky, the new cycle will start, and the old world will end in accordance with the end date of the Long Count calendar. A new civilization may be born every 5100 years. We wonder if five cycles of the Long Count calendar happen to correspond to the Earth's precessional cycle of 25920 years.
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