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The first section of the book deals with possible alignments at the Canadian monument, and the next section relates those discoveries to Stonehenge in the UK - which happens to be at the latitude as the Canadian site.
So far the research looks very interesting - the concept of alignments to the "Equalnight/Equalday" sunrises and sunsets as being distinct from those on the astronomical Equinox is particularly remarkable - not to say obvious when you realise the key difference.
It's all down to understanding that the 'first flash' of sunrise and 'last flash' of sunset are the most accurate determinants of position (as opposed to 'half sun disk visible' or 'full sun tangent to horizon'), and that atmospheric refraction effectively 'pulls' the image of the sun up from below the horizon by about 50 arcminutes at sunrise and sunset.
"Equalnight/Equalday" dates are therefore slightly displaced from the Equinoxes, and fall on March 17/18 and Sept 25/26 each year.
There are sightlines through Stonehenge that target these EN/ED positions, whereas there aren't any that target the dates of the astronomical Equinoxes.
First book in a while that's come up with something genuinely new and interesting - recommended!
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simon
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