UFO details report: I was walking west towards my home from my girlfriend's house 1963 around midnight.I was cutting through the local curling rink which had few lights and allowed exceptional visibility of the night sky, considering I was in the middle of the city. Looking up at a perfectly clear sky and a black night full of stars, I saw a craft about as bright and the size of a large star in the sky. It was zig zagging completely across the sky from east to west. The zig zags were equivalent to an equilateral triangle. I watched this abject for several minutes until it disappeared beyond trees and buildings. At that time there was not a lot of man-made traffic up there. No one can convince me that it was not a craft. My feelings are that they were surveying the earth in a logical and mathematical progression.