1. On January 29, 1868, the Fort Laramie Treaty was signed between the United States government and numerous Native American tribes, including the Sioux, Cheyenne, and Arapaho. The treaty established reservations for the tribes, but was later violated by the U.S. government, leading to conflicts such as the Battle of Little Bighorn.

2. In 1890, the largest snowstorm in South Dakota's history began on January 29 and lasted for three days. The storm dumped up to 52 inches of snow in some areas, causing widespread damage and loss of life.

3. On January 29, 1935, the temperature in Spearfish, South Dakota, rose from -4°F to 45°F in just two minutes, the fastest temperature change ever recorded. This phenomenon is now known as the "Spearfish temperature inversion."

4. The University of South Dakota's basketball team achieved a record-breaking 71-game winning streak on January 29, 1984, with a victory over North Dakota State. The streak lasted until 1986, and remains the longest in women's college basketball history.

5. On January 29, 1992, the South Dakota State Legislature approved a state song, "Hail, South Dakota!" The song was written by Deecort Hammitt and premiered at a celebration of the state's centennial in 1989.