I've released the new version of the Sunpos plugin. SunPos displays sun & moon position (azimuth, altitude angle) of given date/time and place. It's usable for rendering tools. Shows a line of sun in views too.

download it here: http://www.maxwellrender.cz/plugin/sunpos.rhp

comments are welcome - in the sunpos forum: http://rhino.plugin.maxwellrender.cz/