We were sitting in our backyard watching the fireworks when I saw two light in the sky to the west. One brighter then the other and not moving. They sat motionless for about 15-20min and slowly moved off to the northwest. There was no blinking lights like on a airplane and it was a cloudy night so you could not see any stars. After arguing with my wife about it for 20 min they disappeared. She maintains the belief this was some sort of light show.