First, we heard weird sound like air pressure when our window was closed. So we've opened a window and we noticed a weird strong white light which was moving quite fast and a little up. It made a circle around the city (we're living in the city centrum). Then ufo made the second circle and when it was closed to us, we've noticed triangle shape with white and red lights. It had 4 red lights in the middle and 3 white on the side (which were also changing for red, from time to time). UFO was going in the circle 6 and half times. Then it disappear in clouds, so we couldn't see it anymore.