Nice Job! A very useful combination of EOT and clock. Claude Hartman 35.13N 120.58W
[EMAIL PROTECTED] wrote: > I just finished writing a tidy little program that calculates when the sun is > exactly south (or north), east and west for any given date and location. I > wrote it to help mark a cardinal direction for laying out analemmatic dials, > but it can help orient any sundial. Using the vertical string method, an east > west line is much easier to mark than a north south one, because the sun is > lower and so the shadow stays sharp over a longer length. > > Of course, an east west shadow can occur only in the summer half of the year > for people outside the tropic zones (most of the folks on this list). For > people within the tropic zones, the an east west shadow will not form near the > summer solstice either. And for the unfortunate sundialist who lives on the > equator, an east/west shadow can occur on only 2 days of the year--the > equinoxes. > > Download CardinalDirections.exe from www.precisionsundials.com/software.htm, > and let me know what you think. > > -Bill Gottesman > - -
