Fast high altitude sunlit object made sharp 90° turn before going out of sight.I remember the weather was warm, the day Sunny.
I'm guessing September 1963, the Sun was about 3 o'clock position, I was about 13 years. old.
My brother who had been in the Air Force, my Dad, and I watched a bright sunlight object high in the sky and moving fast, Mom may have been present.
My brother made the observation as to altitude and speed.
The object made a sharp 90° turn while flying.
I'm guessing it lasted less than 5 minutes, and then it went out of sight.