It rained on and off all day here in Seattle, and so when the sun came out and struck the new green leaves on the tree in the street, I went to the upstairs window to take a look. That’s when I noticed the rainbow. I ran downstairs and took a picture. All rainbows appear opposite of where the sun is (so I am looking east), and they are actually are full circles! – but most observers just see what is to them, the upper half of the arc.