Phillip A Jaeger riordan at MAIL.UTEXAS.EDU
Mon Sep 11 19:17:50 EDT 1995

>They seem to vary between the 21st and 23rd. I'd hazard that the
>variation would depend on which part of the Leap Year cycle we were in
>since it's the Leap Day that kinda resets the clock.
>The Equinoxes occur when the Sun crosses the Celestial Equator (i.e has
>Declination of zero degrees) and the Solstices occur when the Sun is at
>maximum and minimum declination.

>Of course I could be wrong, but that's the best explanation for the
>variation that I can come up with.

Part of the variation comes from the fact that as the Earth rotates
counter-clockwise around its axis (366 times a year), it also revolves
around the sun (once).  This revolution also creates one clockwise rotation
(366-1=365 days).  This is the difference between a siderial day (rotation
of the Earth/ about 23h 56m) and a solar day (noon to noon/ 24h).

phillip a jaeger ==> riordan at

if your circles could be spirals?
and your idols were machines?
you could pick up all the signals,
and fly from where you've been.

        -Are You Receiving Me?
                Golden Earring  ('73)

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