You said this happens every night. Does that mean you have seen this every single night since Sept, or that every time you've looked since Sept you've seen whatever this is? Do you see this at the same time each night? Any variations as a function of weather/temperature changes? Are there power lines in the immediate vicinity? Any noise associated with this phenomena?
Although I don't put much faith in them, have you contacted the local MUFON chapter? You tell those guys you are seeing UFOs every night, I think it's a good bet they will send out someone to gather evidence of what you are seeing. If nothing else, you'll get the piece of mind knowing someone else is seeing whatever this is.