I am developing an application that automates the 3D Globe control provided by ESRI.
ESRI use this globe themselves in there ArcGlobe application, and within this app it is possible to specify a date/time and plot the sun against the globe.
I wish to replicate this functionality in my application, however ESRI do not appear to have exposed this functionality in the API.
As far as I am aware it is only possible to set the sun position directly as a Lat/Lon
What I need is either :
a) a pointer to the ESRI API to get Sun Lat/Lon from Date/Time
b) code to derive the Sun Lat/Lon from Date/Time.
Note: I do not wish the Sun Azimuth/Altitute I have found these calculations many times. I wont the Lat/Lon position that the sun is directly above. As shown on this site : http://www.fourmilab.ch/cgi-bin/Earth
Thanks in Advance