I don't use supplemental light. I personally believe they need the rest from egg laying, so I refuse to use supplemental light (plus, don't have electricity!, lol) I did, one year, put battery operated christmas lights (white ones) around the coop(outside) with a timer to make it easier on me in the mornings, as at that time I was teaching a 7 am class and had to leave the house by 5:45 am. However, it seemed too disruptive for the girls (light shown through their window), so I took them down after a few weeks. That was before I had discovered the headlamps.
This fall had unseasonably warm weather...and then was rainy late in the season. I suspect that, contrary to conventional wisdom, temperatures affect molting as well as the supposed diminishing of light. We never had a killing frost until late November, and we always have one by/before Columbus day in my area.