Lloyd Sumpter wrote:

That will do it - thanks! Curious about how those formulae were developed,
though...

Spherical Trigonometry - not for the fain of heart.
--
Dan Best - (707) 431-1662, Healdsburg, CA 95448
B-2/75 1977-1979
Tayana 37 #192, "Tricia Jean"
http://rangerbest.home.comcast.net/TriciaJean.JPG