1. In 1889, North Dakota was officially admitted as the 39th state of the United States on September 9th. It was part of the Dakota Territory before it achieved statehood.

2. In 1910, the first airplane to ever fly in North Dakota took off on September 9th. The plane was piloted by Albert F. Grotz of Fargo, North Dakota.

3. The famous North Dakota author and political activist, Dorothy Baker was born on September 9, 1907, in Missoula, Montana. Baker is known for her novels such as Young Man with a Horn, Cassandra at the Wedding, and Trio.

4. On September 9, 1922, the North Dakota State Fair was held for the first time in Minot, North Dakota. Thousands of people attended this inaugural event.

5. In 1966, the Devils Lake region in North Dakota experienced a major flood that caused extensive damage. The flood began on September 9th and lasted for several weeks, with water levels rising to over 20 feet above normal. The flood displaced thousands of residents and caused millions of dollars in damages.