alt.energy.renewable

-> Again, show us where anyone has claimed that the orientation of rotation of
-> the earth changes in space (except that it *does* precess with a period of
-> about 26,000 years). You're ranting is totally off-topic and
-> non-sequitor.

Even the precession is irrelevant to the seasons. Our calendar is based
on the "tropical year", which is the time between, for example, one
winter solstice and the next. This is slightly different from the
"sidereal year", which is the time the earth takes to go around the
sun. The difference is due to the precession. By using the tropical
year, we arrange for the seasons to happen at the same calendar dates
despite the precession.

Long ago, I wrote a computer program that calculated the position of
the sun in the sky, the times of sunrise and sunset, etc., as seen from
anywhere on earth, on any date and any time. I started from first
principles, using the parameters of the earth's orbital and rotational
motions. The answers the program calculated were very accurate. How
likely would that be, if the basic model were wrong? I have never
doubted the conventional explanation for these things, but I still
found the accuracy of the program very satisfying. The universe was
(and is) working as it should.

dow