Yankton Sioux Tribe established in 1853 in Charles Mix County, South Dakota. The tribe has a land base of 36,741 acres. Most of the tribe moved onto the reservation in the 1860s. The tribe owns and operates the Fort Randall Casino and Hotel in Pickstown, South Dakota, and Lucky Lounge and Four Directions Restaurant. Other major employers include Indian Health Services, the tribe itself, Bureau of Indian Affairs, and Marty Indian School. Yankton Sioux Tribe The Yankton Sioux Tribe of South Dakota is a federally recognized tribe of Yankton Western Dakota people, located in South Dakota. Their Dakota name is Ihanktonwan Dakota Oyate,
Native American Day 1998, the California Assembly passed AB 1953, which made Native American Day an official state holiday, observed annually on the fourth Friday in September. In 1997, the state of Nevada also declared the Fourth Friday of September as [Nevada Indian] Native American Day. In 1989, the South Dakota legislature unanimously passed legislation proposed by Governor George S. Mickelson to proclaim 1990 as the "Year of Reconciliation" between Native Americans and whites, to change Columbus Day to Native American Day and to make Martin Luther King's birthday into a state holiday. Since 1990, the second Monday in October has been celebrated