The U.S. Naval Observatory
http://aa.usno.navy.mil/AA/data/docs/EarthSeasons.html
is a source I trust. It gives the following (precision to the minute)
d h d h m d h m
20002000
Perihelion Jan 3 05
[EMAIL PROTECTED] (John Carmichael) writes:
It's an interesting thought to use the moon's shadow at sunrise and sunset
on the equinox to locate your east-west points. Although this can be done
with the sun, you would have errors using the moon, unless there is an
eclipse on the equinox
This actually something like the old way of determing the longitude (before
there were accurate timekeeping instruments). It is called the Lunar
Distance Method. I am sure there will be a number of references on the web.
At 08:12 16-3-00 -0700, you wrote:
-Original Message/Oorspronkelijk
I used xephem 3.2.3 to solve for when solar declination = 0.0 and got
2000 March 20 7:30:59 UTC. Xephem calculates that the declination of
the moon at that time to be 2:50:47.5 (degrees:minutes:seconds).
If you would give me your latitude and longitude I can compute the
azimuth of the moon at
Jim wrote
I used xephem 3.2.3 to solve for when solar declination = 0.0 and got
2000 March 20 7:30:59 UTC. Xephem calculates that the declination of
the moon at that time to be 2:50:47.5 (degrees:minutes:seconds).
I take this to mean that the moon's plane of orbit is tilted too far from
