we decided to report this after watching some ufo tv program with a person having the same experience.

my wife was at the balcony and call me to watch some lights in the night sky. the night was clear with many stars but not clouds (only a formation of clouds in the middle of the sky or our panoramic view of the sky). there were at least 5 light moving in erratic way light trembling (not flashing but moving in zig zag many times and very fast). the light also left some kind of trail after their flight.  there was not a beam light from the ground and not a plane or any other flying machines as we know. the movements were so weird, so fast and so impossible for a airship.  then the lights gone behind the small formation of clouds in the middle of the sky and never went out again (as if they stopped their flight behind that small formation of clouds). my wife and i stayed there in the balcony for perhaps 30 minutes but the lights never went out form behind that small formation of clouds.  many days after that my wife told me about a big light in the balcony but sh! e fall sleep normally, like if she was under some kind of pills. the following night i watched the big light and i fall sleep in the same way... i fill a peace and a feeling of normal status and i do not put interes in the big light. that big light was not a plabe, not the moon, not even a man with a flashlight in the balcony (the most close description to that)... it looks like a floating light in the air.
Witness indicates that the date of the sighting is approximate.  PD