Steve's Atmospheric Phenomena
Crepuscular rays are parallel cloud shadows. Perspective effects make the light that peeks through the shadows appear to
eminate from the solar point. Anticrepuscular rays again are parallel cloud shadows that streak across the sky to the opposite
horizon and appear to eminate from the anti-solar direction.
Here's an example of crepuscular rays. One shaft of light is reflecting from a pool of water.
Here's an example of anticrepuscular rays looking directly opposite the setting sun. This was an incredible sight.