Dare I mention leap years, leap centuries and leap seconds? --- In FairfieldLife@yahoogroups.com, doctor_gabby_savy <[EMAIL PROTECTED]> wrote: > > --- In FairfieldLife@yahoogroups.com, "authfriend" <[EMAIL PROTECTED]> wrote: > > > > --- In FairfieldLife@yahoogroups.com, doctor_gabby_savy > > <[EMAIL PROTECTED]> wrote: > > <snip> > > > > > > If you have a cogent argument as to why you believe it is not, > > > please post. (Just saying it is eternally in March is not a cogent > > > argument. :) ) > > > > No, but it has the advantage of being a fact. > > > > Just take it as a given that > > > while the constellation > > the sun is in on the vernal equinox changes due to the > > precession of the equinoxes, the date of the vernal > > equinox itself does not change-- > > I am sorry judy. That is just not true. As the sun moves from the > beginning of one constallation to another, its a new month. Go through > 6 constallations in 13000 years and the vernal equinox has moved 6 months. > > > it's always around > > March 20--and then work backward, and you yourself will > > be able to discover whatever it is that isn't quite > > right in your mental model. > > Simple read the 8 points in my prior post you will > be able to discover whatever it is that isn't quite > right in your mental model. > > > 1) vernal equinox occurs once a year when day and night lengths are > equal and when the sun rises at true east. > > 2) "precesion of the equinox" means that the position of the sun at > the vernal equinox, relative to the constallations, "retreats" one > degree every 72 years, making a full cycle around the zodiac > of 12 constellations every 26000 years. > > 3) Even with precession of the equinox, from an earth view, the sun > will always rise at due east at the vernal equinox, thus the > precession does not effect orientations of buildings to true east or > the path of the sun relative to buildings (from a year of observations > starting at the vernal equinox.) > > 4) The precession - the postion of the sun at vernal equinox -- > travels through each constellation about every 26000/12 = 2160 years. > In 60 BC, the sun at vernal equinox was just on the cusp of Aires > moving into Pisces. Around 2100, the the postion of the sun at vernal > equinox will move from Pisces to Aquarius (aka the "age of aquarius"). > > 5) The sun annually transits 360 degree , a full "circle" around the > constellations. Each month roughly corresponds to the suns position in > each constallation. > > 6) In summer months, the hemisphere one habitats is closer to the sun > (due to its 23.5 degree tilt -- relative to its "eleptic" path around > the sun). Thus in summer it is warmer and days are longer. In Winter > the hemisphere is further from the sun, thus its colder and days are > shorter. At the equinoxes, matched longitudes in each hemishperes are > the same distance from the sun. Day and night are each 12 hours. > > 7) The precession - the postion of the sun at vernal equinox -- > travels to its opposite constallation every 13000 years. In 13000 > years, the postion of the sun at vernal equinox will be in Virgo, 180 > degrees from its present position in Pisces. > > 8) When the sun is in virgo, around September, the tilt of the earth > relative to its path around the sun gives fall weather for the > northern hemisphere, and spring weather in the southern hemisphere. > > 9) Thus, in 13000 years the vernal equinox will be in September, fall > weather will prevail for the northern hemisphere, and spring weather > will be in the southern hemisphere. >
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