I was driving on I-81 north of Knoxville. It appeared slightly to my left. I don't know how long it lasted because the trees in the median obstructed my view. I observed it for 5 - 6 seconds before the trees got in the way. It was still bright at that point. I estimated the time I saw it. I left Johsnon City around 6:45 pm and had been on the road 30 - 40 minutes.
