Black Triangle Sighting in Deer Lodge, Tennessee on July 17th 2015 – object was hovering in night sky

back porch of home. sitting in chair. Facing west. Color of object was obvious against night sky. A triangle, possible fire works display object? It was simply hovering. I stood to get closer look. When I sat back down, it was obvious object was descending. I asked other person on porch with me if they saw anything. Object descended below trees. Oddly I live in what I term the twilight zone. Actual time zone I live in is eastern. Object was in central time zone, I guess. I live 3 miles from actual time zone change.