We spent an enjoyable evening with friends on Tucson's northeast side, but we were half an hour early. What to do? The sun was setting, and Darlin' and I drove up Sabino Canyon road to get a photo of Thimble Rock. This photo above shows the formation at 4:30 in the afternoon.
45 minutes later, we were a mile away, perhaps 300 feet higher in elevation, and the sun was very low in the sky. As the sun set, I took this picture of Thimble Rock. It's there on the right. As the sun goes down, the mountains turn pink, then blue, and finally purple. There's not a prettier place on the planet, IMHO. Come visit anytime!