Anticrepuscular Rays Over Colorado (Credit & Copyright: John Britton) - Picture shows a particularly striking set of anticrepuscular rays photographed in 2001 from a moving car just outside of Boulder, Colorado, USA. How many people turn around when they watch a beautiful sunset? Not many, but here are a few good reasons why they should. Anticrepuscular rays are similar to crepuscular rays, but crepuscular rays appear to converge on the sun, anticrepuscular rays converge in the opposite direction and you must have your back to the sun or sunset.