the sun during the year
What's the angle if incidence in ... at ... o'clock?
Next applet shows the earth. The yellow meridian circle separates the parts that are lightned up by the sun from those that aren't.
- You can modify the axial tilt by dragging the north pole.
- You can modify the latitude by dragging the green point on its meridian.
- You can modify the time by dragging the blue point on the equator.
- The yellow arrow marks the angle of incidence of the sun.