Six stationary craft in a grid formation. The craft were of a 'Z' shape. I can't find any similar shape on the internet. I have a photo

It was a clear day, my wife and I were walking up to our shed, on our farm. I looked up into the clear blue sky and saw six stationary objects in a grid formation. They were glowing a bright white. I had a camera on me at the time, so I set about preparing it to take a photo. During this time, I noticed the brilliance of the objects were fading away - starting from the top/back of the grid to the top front of the grid and then working down to the next row down at the back then the front etc.
The first photo I took was not aimed correctly and I failed to capture the objects in frame. By the time I took my second photo, all that remained in view, was three objects that were in various stages of fading away. The lower/bottom/ front object has the full glow of all of the objects when we first saw them. The object behind has faded some and the object adjacent to the bright object, (up and to the right) has all but disappeared. These objects I'm guessing where at about the same altitude as 747 on approach to an airport some 200 kilometers away. (What ever that is) There was no noise to be heard.