I smoke but not in my house. I routinely go out to the front porch to smoke outside. On January 1, 2012 at 2:30 AM I went outside as I usually do and lit a cigarette. As I lit up I noticed a shadow cast across the ground and side of my neighbors house to the south of mine. It was a clear night with many visible stars and a lot of moon light but not a full moon. As I leaned out from my house and peered up I actually almost choked on my cigarette. I can by no means give a good description of what I saw. It would be better to describe what I couldn't see. The object was absolutely massive and completely silent but what caught my attention was that it completely blocked out the stars. It was a black object on black sky with stars out. No lights at all or visible characteristics other than the shape based on the visible stars it blocked as it passed overhead. Knowing that size and scale is important, the only thing I could do was hold my forearm up and try to use it as a scale to estimate size based on estimated distance. Based on a lot a vague numbers based on distance I would give a best guess size of the wingspan being around 800 feet