The reason 12/21/2012 is significant is that it sits at one end of a 12,000 – 12,500 year cycle (it is not a perfectly steady movement). The Earth’s poles drift about 23 degrees as it rotates. This causes the north star to change. It is called the “procession of equinoxes”. On 12/21/2012 the drift will hit it’s nadir and begin reversing itself. 12,500 years later you arrive at the zenith – the opposite point.
The Mayan “long-cycle” ends on this date. It is a reflection of the older Vedic galactic calendar which divides history into 4 yugas or Epochs. The first Epoch lasts 4,000 years, the second lasts 3,000, the third lasts 2,000 and the fourth lasts 1,000 years. This creates a total of 10,000 years. Add in the transitional period of 10% of the duration of the Epoch on both the beginning and the end of the epoch and you have
Epoch 1 (“Satya”) = 4,800 years
Epoch 2 (“Treta”) = 3,600 years
Epoch 3 (“Dvapar”) = 2,400 years
Epoch 4 (“Kali”) = 1,200 years
The sum of these 4 epochs = 12,000 years – which is the time it takes the north pole to move from Polaris to Vega (to drift it’s full amount).
When Epoch 4 finishes, the order reverses, this Epoch 4 again starts and moves upwards this time, next coming to Epoch 3, then 2, then 1. And than again the order reverses and repeats.
Note to the learned: These are the manushya-yuga or “humanly ages” – the celestials experiece these on a scale that is exactly 360 longer (thus from their point of view, Kali Yuga lasts for 432,000 years)
NOW PUT THAT ASIDE FOR A SECOND…
Next you have seasonal issues – 12/21 is the winter solstice, the shortest / longest day of the year (depending on if you are in the northern or southern hemisphere). Thus the position of the sun is of particular importance on that day.
on 12/21/2012 the sun will be conjunct the center of the galaxy (a star or black hole called Sagittarius A). This “star” is supposed to be 93 million miles in diameter (the same dimension as the distance of the earth to the sun) it is a black hole 26,000 light years from earth. Many astrologer consider this “galactic center” to be the ultimate source of all the karmic power and authority given to the astrological planets.
When the Sun conjoins this point on a soltice it signifies monumental effects. The last time this happened about 12,500 years ago – which might have been when the quasi-mythological Atlantis was flooded and lost. This is because 12,500 years ago marked the end of the 1st Epoch and the beginning of Humankind’s descent into darkness. Atlantis was lost and human culture gradually fell to pieces.
The nadir of human culture was felt in the the middle of the two Kali Epochs (4) – this was the midst of the dark ages.
At this point we as a human culture began climbing back out of the darkness, rebuilding towards a new flourishing of humanity. This ascent of humanity proceeds over the next 12,000 years gradually. 12/21/2012 is a significant milestone marker. Whether this milestone is marked loudly or quietly remains to be seen. (for more info see my blog post)
Personally, I believe that both America and Christianity (The Kali Epoch’s equivalent of “Atlantis”) will begin an irreversible decline significantly marked at 12/21/2012. And within a few decades or maybe centuries both of them will be lost and forgotten. This will be a good thing for humanity in the long run – but during the transition there will be grief.
We have to keep ourselves aware that the time scale we are dealing with is HUGE. 12,500 years is a LONG TIME. So basically 2012 is happening ALREADY give or take a few years (which is nothing but a moment in comparison to 12,500 years). If you want to see what is going to happen “On 2012” – look around you today. Sure enough we see a global environmental crisis and a very strong global economic crisis centered on America. It’s not really a “prediction” anymore or a subject of debate, it’s something already happening. The debate is about how far it will go. And I am inclined to say “all the way.”