|The answer to this question is
the answer to whether or not the two sites need to be on the same
line. They do not. To see why not let's look at an example.
Let's say that in New York City on July
sun will rise
at 5:38 am and set at 8:26 pm. If my arithmetic
is correct this
means that there
will 14 hours and 48 minutes of daylight. Local
noon (the time when the sun is at its zenith) will happen at the
that daylight span or 1:02 pm.
is not a particular configuration of the hands on a clock, but rather a
physical event. This is when the sun is highest in the sky.