1. On June 20, 1951, the "Great Flood of 1951" hit the Red River Valley, causing widespread devastation throughout North Dakota, Minnesota, and Manitoba. The flood was one of the worst natural disasters in the region's history, with over 10,000 people displaced and $150 million in damage.

2. June 20, 1964 marked the grand opening of the Medora Musical in Medora, ND. The musical, which is performed every summer, celebrates the history and culture of the American West and has become a beloved tradition for locals and tourists alike.

3. In 1994, Governor Ed Schafer signed a bill designating the western meadowlark as North Dakota's official state bird. The bill was signed on June 20, coincidentally the first day of summer.

4. On June 20, 1975, the International Peace Garden was dedicated along the border of North Dakota and Manitoba. The garden serves as a symbol of peace and friendship between the United States and Canada, and features over 150,000 flowers, trees, and shrubs.

5. In 1898, the town of Crosby, ND was officially incorporated on June 20. Today, Crosby is a small but thriving community known for its rich agricultural heritage and historic Main Street.