"Tim923" wrote in message
...
Some earth science type questions:

I had thought that days at the equator were exactly 12 hours long all
year round, but charts show varying sunrise and sunset times. How is
that?

When is high noon at 42 degrees north, 76 degrees west?
I came up with 12 + 1/15 = 12 + 4/60 = 12:04pm EST.
Does the latitude come into play at all, or is it just based on
longitude?



In addition to the factors indicated by Yokel and Falk, there is also the
description at:
http://www.analemma.com/Pages/framesPage.html

The earth does not rotate "true", but wobbles on its axis.