There were four lights moving in unison with no sound at all.

I was walking my dog after dinner. While he was sniffing around I noticed four lights slowly coming in from the ENE towards the WSW. They were directly above me, they were very slightly north of me. They moved slowly and completely silently. As the lights were even with my position, still viewing slightly north, they light turned to the WNW direction. The lights turned in perfect unison and completely silently.
As far as shape, the lights were bright so shape was difficult to discern. They were lit continuously with no blinking. They appeared to be either upright rectangles, brighter on the ends or they may have been hourglass shaped. Because it was dark I couldn't tell if it was a single object with four lights or four separate objects.
The experience was a little creepy. that might have been the movement in complete unison and in total silence.