Okay, so this is cheating a bit. This image is from last year, around the times the leaves fell. But where I lived this summer, there wasn't anywhere to bike (at least not without risking getting hit by an 18-wheeler, a normal driver, or say, flying road debris) and so now that I'm back, I've started biking again.
My favorite time to bike is in the morning, when the sun is first rising. The bugs aren't out then and most people aren't either (fewer times I have to call out "on your left"). Plus, when I start the day out with a decent bike ride--that is, 12+ miles--then my whole day seems to go better. Of course, I can't pull that off every morning. I have teaching to attend to, or coursework, or just plain needing to get little things done and out of the way. But I think that morning, around sunrise, is one of the best times of the day. I think it's the one reason I look forward to the days getting shorter...it means that sunrise comes a little later.
I can't possibly be the only person who bikes that looks at this thing. Where do you like to bike and when?