At outdoor light. I have had difficulties with these moths of which I have photographed several, all with barely visible or no "smudges" (Robert Zimlich's term) at the PM line. Yesterday I photographed one with distinct smudges that otherwise matches the one of this post perfectly in terms of forewing pattern and size. Unfortunately, this moth was in a too badly battered condition to justify posting, but I now have confidence in the ID of my tentative compensata photos. This one provides a September image for Florida.