6a-2p here. I start my 21 mile trip at 3:30am. I've had a few negative run-ins that early, but not nearly as many as in the afternoon.
For those of you who think your "900" lumen lights are enough, I have one warning. I used to think the same thing, but I found out we are wrong. Having one strong light isn't enough. You need several forms of active and passive systems in place, and you can NEVER become complacent.
I still have folks coming in from the side streets look directly at me and still not see me.