--- Canopus56 <canopus56@yahoo.com> wrote:
I'll probably walk over to the Gallivan Center at around _12:30pm_ to watch the Gallivan sundial tick off local equinox. <snip>
As a continuation of my winter solstice look at the Gallivan Center Sundial, I went over before 12:30pm to see the vernal equinox local noon at the dial. My main interest was in establishing for future reference where on the dial plate, the horizontal traveling line of the gnomon's equinox shadow falls. The overcast clouds did not clear till around 1:00pm sufficient to give a useable view of the dial's light gnomon. The dial plate consists of about five components. The key one here is an inner circular ring which is surrounded by a band containing the symbols of the Greek zodiac. At the equinoxes, the top of the light gnomon moves in a line approximately perpendicular to the gnomon and tangent to the inner or "bottom" side of the zodiac symbol band. - Canopus56 (Kurt) __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com