When was the first aurora in Beijing history?

201June 3, 7. According to Sohu News, Aurora appeared at the junction of Huairou District and Miyun District in Beijing at 20 17. On that day, the weather was fine, there was no rain and clouds, and the geographical position was good, so we could observe this spectacle. Aurora is a colorful plasma phenomenon, because charged particles from the sun (solar wind) enter the earth's magnetic field, and bright and beautiful glow appears in the sky near the north and south poles of the earth at night.