1. First State Flag Day: On August 14, 1992, South Dakota celebrated its first State Flag Day. It was on this day that the state flag, which features the state seal surrounded by the sun's rays on a field of blue, was officially adopted as the state flag.

2. Wild West Shootout: On August 14, 1876, a group of outlaws attempted to rob a stagecoach on the Cheyenne-Deadwood stage line near the town of Rockerville. A gunfight ensued between the outlaws and local law enforcement, resulting in the death of two outlaws and the arrest of the others.

3. Mount Rushmore Dedication: The dedication of Mount Rushmore took place on August 14, 1927. President Calvin Coolidge was in attendance and spoke about the significance of the monument, which honors four of America's greatest presidents.

4. Women's Right to Vote: In 1918, South Dakota became one of the first states to grant women the right to vote in state and presidential elections. This historic move helped pave the way for the passage of the 19th Amendment to the U.S. Constitution two years later, which granted women the right to vote nationwide.

5. Homestake Gold Mine: On August 14, 1876, the famous Homestake Gold Mine was discovered in the Black Hills of South Dakota. The mine, which produced over 40 million ounces of gold in its 125-year history, played a significant role in the development of the state's economy and mining industry.