Distant bright light flying in erratic pattern traveling from west to east at sunset.

I was walking my dog in my front yard. I looked up to see a bright white light/object traveling west to east, far away. There was an airplane flying overhead as well, with it's blinking lights clearly visible. The object I saw was much brighter than the airplane and looked far away - all I could make out was a bright, white light. The sun was setting but it was not completely dark yet; the outline of the plane was still visible. Some stars were lightly visible. I watched the light travel from west to east, at first looking like a straight pattern, but all the sudden jumping off it's course and then all of the sudden back on it's original course. A modern plane could not have made the maneuver, it was a rapid acceleration/jump. The light eventually passed behind the treeline and I lost visibility of it. The time was exactly 8:20 PM because I texted my girlfriend right after and looked at the time stamp.