1. Statehood Day: January 15 marks the anniversary of when North Dakota was admitted into the Union as the 39th state in 1889. This day is celebrated as Statehood Day in North Dakota.

2. Bank Robbery: On January 15, 1951, one of North Dakota's most infamous bank robberies occurred in the town of Kulm. The robbers made off with over $5,000 in cash and were later apprehended in California.

3. Bison Birth: The North Dakota state animal, the American bison, has a special connection to January 15. In 1953, a bison was born at the Theodore Roosevelt National Park on this day. The calf was named "Statehood" in honor of North Dakota's admission to the Union.

4. Winter Weather: North Dakota is known for its harsh winter weather, and January 15 has seen its fair share of extreme conditions. In 2008, a winter storm brought blizzard conditions to the state, leading to school and business closures. In 1916, the temperature in North Dakota dropped to a record low of -60°F.

5. Women's Suffrage: North Dakota was one of the first states to grant women the right to vote. On January 15, 1917, the North Dakota legislature passed a bill allowing women to vote in presidential elections. This was a year before the 19th Amendment was ratified granting women the right to vote nationwide.