I don't remember the exact date, but this was sometime around June 18. I was on the roof deck with my dog. There was a low layer of clouds and I was looking at the cloud formations when I noticed a dim disc of light approaching from one direction. It soon came out from out of the clouds and became very evident that there were maybe 5 lights in V-formation. The lights cruised in total silence above my house and soon became 7 or so. They seemed to be flying very low and I got so disturbed by this that I turned out the roof lights so that I wouldn't be seen. I know it was not a drone or a plane because those make loud sounds, especially when they are near. This was totally silent which was very disturbing because I don't think there are any terrestrial aircraft right now which are capable of cruising in total silence. After a while the lights faded away. When you look at airplanes flying in the sky, they seem like they're only a centimeter or so in length. This ship (or whatever it was) was so huge that it looked about the length of my entire palm.