1947 was also the date of the roswell incident, David Flynn among others has managed to extrapolate a link from this to 2012, by multiplying 1947 by the latitude of the crash site, and moving a few decimal points around, I suppose you can do anything with numbers. here's an extract from a blog i found,
link here
19.47° or “19.5″ is a universal number signifying the meeting of a tetrahedron with a sphere. 19.47° is the latitude where 3 points of the 4 sided tetrahedron touch north or south the equator if the 4th point is anchored at the pole of a rotating sphere. If the number 19.47 was discovered in an extraterrestrial radio signal, SETI scientists would have proof that the broadcasters understood advanced Platonic geometry. The Roswell message numerologically interconnects 19.47 with the date, latitude, longitude and distance from the equator of the impact event itself.
The earth is 21,600 nautical miles around. This measurement is based on the ratio of 360 x 60 first used by the Phoenicians and still in use by modern ocean and flight navigators.
The number 6,480 is exactly 1/4th of the total 25,920 years it takes earth to complete one circuit through the signs of the zodiac. 6,480 years is unique because it marks the duration between a series of global cataclysms left in earth’s historic and geologic record.
At Roswell, 19.47 appears in relationship between 21,600, 6,480 and 33.33
When the earth’s circumference, 21,600 is divided by 33.33 the number 6,480 appears in a variation:
21,600 / 33.33 = 648.06480648064…
648.06480648064..divided by 19.47, the number suggested by the year of the Roswell crash itself (1947)…produces a modification of 33.33:
648.064806480 / 19.47 = 33.28