1. North Dakota's first leap year celebration was in 1888 when the state was still a territory. Celebrations were held across the territory and in newly established towns like Bismarck and Fargo.

2. February 29, 1912, marked North Dakota's first leap year as a state. This year was particularly significant as it was also the year the state capitol building was completed in Bismarck.

3. In 1940, February 29 fell on a Thursday, which was considered an unlucky day by many Native Americans in North Dakota. Some tribes avoided making important decisions or undertaking significant activities on that day.

4. The winter of 1964 was particularly harsh in North Dakota, and February 29 saw a record-breaking low temperature of -40°F in Rugby, North Dakota. Many schools closed due to the extreme weather.

5. In 2008, the North Dakota Democratic-NPL held its presidential caucus on February 5, which was before the official leap year day. To accommodate this, the party held a special "Leap Forward" caucus on February 29, allowing voters who missed the first caucus to participate.