I was sitting in my yard east side of house, It was a clear night. A bright light caught my eye. I only had to adjust my line of sight up slightly. There was a bright white light for a second, out of which came a beautiful lime green laser like beam. The green light was slightly angled down. When the green light came out it grew slowly (several seconds), not instantly like a beam of light should. It seemed like there was a bluish white light underneath green light, but I can't be sure. When light went out it was gone instantly. I stayed out for another hour or so and never seen or heard anything else.