Hi John,
If you are interested in site specific solar data try using my Solar
Calculator, URL below. As well as accurate sunrise, sunset and transit
time(s) it will produce a variety of other solar data values. Also,
mention of a world map with the solar terminator came up recently, I
have another cgi application that I wrote that produces such a map as
well as a number of instantaneous solar data values, see second URL
below. Incidentally, I am in the midst of updating the program to overly
the region of the Earth under shadow with the corresponding portion of a
world map showing the "city lights" at night. Montana sure looks like a
good spot to set up a telescope...
http://www.gcstudio.com/suncalc.html
http://www.gcstudio.com/cgi-bin/sunmap
Enjoy,
Luke
John Carmichael wrote:
>
> Hello dialists:
>
> The Arizona Daily Star did a little story today on a great website which
> will give you the exact time of sunrise and sunset for 130,406 U.S.
> locations for any date! David Shaw's easy-to-use site also indicates the
> exact latitude and longitude of these locations. It is fun to see by how
> much the moment of sunrise and sunset changes even at different locations
> within the same city.
>
> check it out: http://www.jabberwocky.com/photo/suntimes.html
>
> John Carmichael
> http://www.azstarnet.com/~pappas
