I was watering my garden in my back yard when i suddenly heard airplanes and helicopters in the area. i pulled out my phone and opened up the flightradar24 app to see if i could see what was in my area. i did not see any aircraft near my proximity so i looked up in the sky and saw what i thought at first to be a silver mylar balloon. it appeared to be changing shape from a cube to a triangle but it could have been the sun reflecting off it as it moved in a straight path from north to south. suddenly an airplane flew underneath it so it had to be larger than a balloon but it was so steadily on it's path i wasn't sure. then it stopped in its course directly above me for about 30 seconds. i took out my phone and snapped a picture of it. then it continued on it's path south until it was out of my sight.