Strange sight in night sky. Cluster of stars, aircraft ?

On Saturday night at about 10 PM I ran outside to put trash in the can, glanced up into the night sky and was shocked at what I saw.

It appeared to be a triangle formation of star size ( from a visibility stand point) aircraft very high in the night sky. The sky had alot of clouds , but as the clouds moved these lights in the sky were exposed, there were about 16 total moving from due North to due south.

They moved from 9 o'clock to 2 o'clock in the matter of 10 minutes. 3 were in a triangle formation the remainder were scattered haphazardly a short distance from the tight cluster.

The million dollar question is what were we seeing? My daughter insists that it was stars, I said and believe that because the Earth revolves from East to West, ( right, because it appears that the Sun rises in the East, and sets in the West,, I know the Sun and stars are stationary, we rotate and our Horizion changes,, but what ever). Because of our rotation it seems odd if not impossible for the stars to appear to move from due North to due South..

Smart people please give me insight.

Thanks