On the 3rd july 2018, my wife was outside in the back garden, on a gorgeous mainly sunny day. she called me to come and look at two (the only two) clouds in the sky, that looked pretty, but unusual. we stood for a few minutes looking at the two clouds and i thought that they were unusual enough, to warrant a photograph or two, for the album, as it were. i took what was meant to be a few pictures, but upon looking at them afterwards, i had inadvertently put my camera in "burst mode" and one of the pictures, actually turned out to be a burst of 100. with a view to deleting most, if not all of them, i looked through them prior to deleting them (which i then chose not to do) and noticed that frames 16, 17 and 18 of the burst sequence, had a white spot on them in different positions on each picture, leading from just above the lower right hand cloud, moving upwards and to the right, over the three pictures, towards the top of the 18 frame picture. i saw nothing in the sky on the day, nor on any picture, before frame 16 and nothing after frame 18. i still have all of the pictures taken that day and all are sequentially time stamped by the camera, if you would like to see them, though i wouldn't know how to send you the complete burst sequence of 100, as each frame is about 1.38 mb and has a resolution of 4032 x 1960. i will attempt to include frames 15, 16, 17, 18 and 19 to you, if your system allows it, to give you an idea of what we found and saw on the pictures.