I saw one of these once on my way to a speech/communications class in college; it was about 745pm. I was at a stoplight and it shot across the sky and disappeared behind the trees across the street. It was so bright, like the most neon green color and completely lit up the night sky. Everyone at the light just got out of their cars and stood there for a few seconds. I imagine this is incredibly uncommon and we were all just in awe of how awesome it had been.