唉,怎么是正方呢?看一下有没有吧：祝成功
According to all the ridiculous hype surrounding Dec. 21, 2012, the Mayans "predicted" the end of the world with one of their calendars. On this date, doomsayers assert that Earth will be ravaged by a smorgasbord of cataclysmic astronomical events -- everything from a Planet X flyby to a "killer" solar flare to a geomagnetic reversal, ensuring we have a very, very bad day.
Now, purely as a consequence of the Long Count's numerical value, many Mayan scholars agree that the calendar will "run out" after 5,126 years (or, at least, it's first cycle does). The Mayans set this calendar to begin in the year 3114 B.C. (according to our modern Gregorian calendar). If the Long Count began in 3114 B.C. and it's calculated to continue for 5126 years, the "end date" will be -- you guessed it -- 2012 A.D. Further refinement sets the date to Dec. 21, the day of the winter solstice for the Northern Hemisphere.