During the time of the event approximately at 4:30am, I was at home and watching TV because I wasn't tired. I decided to smoke a cigaret on the balkony. It was very windy outside and the clouds moved very fast and that fascinated me so I continued watching them. Among them I spoted some lights but was able to identify them as airplanes because of their shape, lights positioning, flight path and direction. Than those 6 lights in a triangular formation symetricaly alligned, 3 of them in the corners and 2 of them in the middle of their sides and one little red light in the middle came out of nowhere. I thought that was just a star formation that was hidden behind the clouds but than I realized that those lights except the red one in the middle were pulsating much stronger than the stars and moving to the west and than back to the east and sometimes just hovering on the same spot. The weird thing was that when hovering, the lights in the middle moved to the left and to the right and while doing this the whole triangle rotated. Than it stoped and moved and than again and again. I observed it approximately for an hour and a half until the clouds came and I lost the view. I wasn't able to do any footage because on my camera those lights were blured and it looked like nothing. If necessary i could do a sketch.