IF, and that's and BIG IF, it wasn't a nubbin/spike you didn't notice...
Two days after the new moon. 7% light. May have caused a couple girls to get 'close' to smelly. Only thing I can figure.
Full moon triggers most does, typically 4-5 days afterward. Bucks a little sooner in anticipation. Have also seen a muted effect, on new moons, over the years.