Photo taken with D-810 with a 5ms shutter speed. I always thought the green flash at sunrise or sunset just involved the Sun’s disk. Not so. It makes sense the green light is seen with more sensitivity. But more. It acts like all light. It reflects, radiates, and diffuses. This is the Green Flash at Cocoa Beach, FL at the Buzz Aldrin’s Apollo 11 Gala for ShareSpace.org last year.