@Breaking Dawn Thanks for your reply! I'm sure the earlier sunset now isn't helping. But this is something that has been going on for several months. I don't even recall when I first began to actually notice it. But I know I was experiencing it throughout the summer. It is true though that even in the summer, I don't spend much time outside except for taking our dog for walks. So SAD in probably a possibility. Have you tried using a light box? (I haven't.)