This applet relates the sun's illumination angle of the earth globally, with the local sunlight angle experienced by an observer depending on observer's location.[br]GeoGebra does astronomy![br][br]Drag the Sunlight point to change the Sun's angle (season). In reality, this angle stays within 23.5° of the equator.[br][br]Drag the Person point to change the observer's latitude. The right panel shows the local sunlight conditions experienced by the observer, including a measure of how "spread out" the sunlight is on the local surface.[br][br]Shift-drag to pan the view, shift-mousewheel to zoom.