Here is the link for an E-mail exchange between Gilbert and Jenkins. Jenkins is always so eager to prove someone wrong. But nevertheless, it makes for an interesting read.

http://www.alignment2012.com/AdrianGilbert-email-exchange.html

They use the link with the Aztec 5 worlds myth, saying that each era are different lengths according to Jenkin's review.

They use the 260 day cycle to describe motions of venus, and also the sun. 26 days is the rotational period of the sun at it's equator, which is apparently crucial in detecting sunspots? And if you take 260 * 16 it equals the 11 year solar cycle. I'm not sure where the 16 comes from.

To answer obaeyen's question, they say that this date was the "birth of venus" according to the Maya. I don't think they mean when it was constructed, but when it met a certain part of the sky. It is covered in Jenkin's review as well.

I checked my starry night but I do not see anything unusual.
Moon is for example 4% illumination.

Note:I do not mean the science Unified Field Theory.

lAccording to the ancient Maya, 21 December 2012 will be the end of the world as we know it. On the stroke of midnight their calendar, like the mileometer of a car, will click round to to read 0 baktuns, 0 katuns, 0 tuns, 0 uinals and 0 kins. The last time it did this was on 12 August 3113 BC over five thousand years ago.

Since according to the Maya the last age and indeed the two before that ended in catastrophes, we have to ask ourselves what might happen this time. Should we take seriously their claims that this will be a time of apocalyptic cataclysm? How did the Maya, a clever but nonetheless Stone age people, calculate the date of an astronomical occurrence that was scheduled to take place many millennia in the future?

These are just some of the questions that are posed in the present book. Written in the form of a personal quest, it takes the reader on a journey round some of the major sites of Mayan interest. Interwoven with the story of this physical quest is a journey of ideas. Only recently has the written language of the ancient Maya has been decoded. This has made it possible, using computer programs, to compare dates they recorded with actual events in the sky. A new picture is emerging of the Maya as a people possessed of extraordinary knowledge concerning astronomy that without the benefit of telescopes and computers ought to have been impossible for them to know. How they may have come by this knowledge is one of the dilemmas of Mayan archaeology.

In this book Adrian addresses this seldom discussed issue, exploring the question from a multiplicity of angles. In the end he comes up with some surprising conclusions. Perhaps we are not as alone in the universe as we think.

http://www.adriangilbert.co.uk/books/mayan.htm
Adrian Gilbert is the author or co-author of a number of best selling books, including The Orion Mystery, The Mayan Prophecies, Magi, Signs in the Sky and The End of Time.

For nearly forty years he has been following the path of gnosis, i.e. knowledge of the truth concerning the universe and man’s possibilities within it. This has taken him all over the world, exploring diverse cultures and philosophies.

Though his published work mainly concerns new approaches towards the understanding of ancient mysteries, his interests are much wider in scope than this. They include Christian mysticism, yoga, astronomy, astrology, physics, alchemy, sacred geometry, Gurdjieff/Ouspensky, psychology, tarot, prophecy, Mayanology, Egyptology, pyramids, Zoroastrianism, hermeticism, spiritualism, kabbalah and the quest for the Holy Grail.

Based on the evidence of the long-term movement of the stars, he believes that the world is currently going through its most major change for at least thirteen thousand years (and probably much longer). This change embraces much more than an alteration of climate: it has profound consequences for us all. We are moving into a period of history that offers new opportunities for self-transformation, both as individuals and as a species.

To this end he has set up this website. While it is a show-case of his published work, it is also intended to be an oasis for those seeking a reliable philosophy that brings together the wisdom of the past with the science of the present. It is hoped that it will in time develop into something more than this: an on-line school for those who wish to follow his path towards enlightenment.

That should give you something to work off of

I read the review by JMJ, its pretty good. However, I have also read reviews of JMJ's review saying that he reviewed many things he just didn't understand. I am curious about these two….even though they say the last magnetic reversal happened as early as 650 ad

I'll have to keep digging on those two. The first site does not impress me too much, other than its brief review of the book. The author appears to be confusing Maya and Aztec cosmology and calenders. He's also not sourcing his material, so I can't tell where he gets it from.

This one by John Major Jenkins on his website about their book the Mayan Prophecies.
http://www.alignment2012.com/mproph.htm

Let me know what you guys think. Their book is older, but a start up for Geryl and Joseph.