Pink rainbows typically appear at sunrise and sunset, due to the position of the sun in the sky.
When the Sky Glows Book by Nell Cross Beckerman, David
Rare Pink Rainbows Light Skies Of South And West England
People stunned as 'mother of pearl' rainbow clouds light up sky
Pink rainbows light up the sky over England
Pink rainbows light up the sky over England
Briana Scalia's Profile, The New York Times Journalist
114,448 Rainbow Sky Stock Photos - Free & Royalty-Free Stock
Rare Pink Rainbows Light Skies Of South And West England
Pictures: Rare 'rainbow' clouds light up Northern skies
What Causes Rainbow-Colored Clouds in the Sky?
Wales weather: Sky turns pink and purple - BBC News