What is special about December 9th in history?

  On December 9, 1979, Ma Yanhong won the first gymnastics world championship for China.

  On December 9, 2004, in the game against the Spurs, McGrady scored 13 points in the last 35 seconds, creating a "Meddy Moment" that fans talked about.

  December 9th is there every year. Which year of today has a special meaning to you?

What unforgettable thing happened?