Swinging?

Or just reflections?

Actually, I was trying to see if I could already get a nice almost full moon picture... When looking through the window, I figured that this christmas/darktime window light was actually making quite nice reflections when you look at it close/ in right angle. So instead of almost full moon, I will wait for the real full one ;) (and maybe even clearer sky/colder weather... Only -13C now)