Sun Calculator

Given the limitations of that particular site, may I suggest that there are apps for your smartphone/iPad that allow you to calculate location/bearing and shadow angle/rise-set times for both sun and moon for any location or time-of-day/date you wish. I put one on my iPod Touch called LightTrac (available from the app store). I use it from time to time in satellite-view mode as I'm a photographer, but I can see it might be useful for campers wishing to insure they have the shade during the heat of the day or to locate the right angle to set a solar array.