Steve, I'm not sure I understand your question, but I think I know what you're asking, so I'll take a whack at it.SteveS wrote: ↑Sun Feb 10, 2019 8:54 amPertaining only to the 360 Circle of the Precession Cycle is this Precessional Circle perfectly squared with 4 90 degree quadrants only when 00,00 degree of the Cardinal Points in the Sidereal Z are exactly cnj the Vernal Point? I can see with astronomy discussed in this thread the astronomy involving these Circles are perfectly squaring out with 4 90 degree quadrants with charts my eyes see, but what is happening to the astronomy with the Precession Cycle when 4 times in c. 26,000 years the exact zero points of the Cardinal Sidereal Ingresses are exactly cnj the Vernal Point, or does this matter with the context of this thread?
At all points in the 26,000-year cycle, and everywhere on earth, the following is invariably true:
Whenever either equinoctial point is exactly on Ascendant, the solstice points (which are exactly square the equinoctial points) are on the meridian and the Antivertex-Vertex axis has exactly the same longitude as Asc-Dsc.
As I write this, the SVP is 4°59'48" Pisces. Therefore:
* The vernal equinoctial point is 4°59'48" Pisces
* The autumnal equinoctial point is 4°59'48" Virgo
* The summer solstitial point is 4°59'48" Gemini
* The winter solstitial point is 4°59'48" Sagittarius
Therefore, for all places on the world today, the following things are true:
1. If 4°59'48" Pisces is on Ascendant, the MC will be 4°59'48" Sagittarius and the Vertex 4°59'48" Virgo.
2. If 4°59'48" Virgo is on Ascendant, the MC will be 4°59'48" Gemini and the Vertex 4°59'48" Pisces.
For example, let's see when one of those times was today for Springville, AL, using 33N46'30", 86W28'18". The VP 4°59'48" Pisces rose at 8:24:23 AM. (Set up a chart for any time today in Springville, click the Rectify button, and put 4 Pi 59 48 in the Asc box. Understanding that calculating a chart to the nearest second of time gives you angles with a possible error of up to 15" (1 second of time = 15" on the angles), calculating a chart with Solar Fire for this exact time, longitude, and latitude gives:
Asc 4°59'59" Pisces
MC 4°59'55" Sagittarius
Vx 4°59'53" Virgo
The few seconds difference (11", 7", 6") are rounding errors, but I assure you that they all hit 4°59'48" at the same moment. Do a chart for 1 second earlier (8:24:22 AM) and you'll get angle positions ending in 36", 41", and 43", respectively (try it and see) - it's a rounding error. Somewhere around 8:24:22.52, these were all exactly 4°49'48".
Then test again for yourself but with the autumnal equinox rising, 4°59'48" Virgo. Do it yourself but, so you can check your work, I'll tell you the time is 8:22:25 PM. Test if for other locations if you like, or for Springville for different dates (get the new SVP each time). You'll see that the above remains true.