Double Rainbow happen when there is Rain and Sunlight both in a specific way. One can enjoy just for few moments as the Sun position changes relatively to earth and Rainbow Disappears. Yesterday it happened that I just came out of the door and saw bright color Rainbow, grabbed my camera and went on to terrace for full view of the Rainbow and got the shots below.
You can see there is a double Rainbow in the Pic Belwo. Check out the differences, the colors gets inverted in the second, bigger Rainbow. As I was unable to shoot whole thing in one shot, this is stitched later. Its a Panorama. Captured in Portrait View.
This one is also a Panorama which is captured with Landscape View.