The German date - The ninth of November

What is so special about the 9th November for Germany? It was on November 9, 1918, that the November Revolution culminated in the proclamation of the first German Republic. It was on November 9, 1923, that Adolf Hitler instigated a coup attempt. The November 9, 1938 was the date of the infamous Reichskristallnacht. And it was on November 9, 1989, that the wall between East and West Germany fell. Wolfgang Brenner examines the connections between these different events.