I looked it up and noticed that I indeed wrote about the phenomenon of November sunsets a year ago here on Cake. But you know--the colors are back, in a big way, so don't mind the reminder, OK?
If you're reading this in the United States, your optimum time to grab the camera/phone and get out there is roughly ten minutes `til 5. That's when the sun sets, and then hang around for another good ten to fifteen minutes. That's when the colors get even richer.
I'd love to see some of your sunsets from other places!