The bill establishes the official standard time for the state of South Dakota, aligning it with the time set forth in 15 U.S.C. 261, effective January 1, 2025, for both the central and mountain time zones. It also provides an exemption for the state and its political subdivisions from the requirement to advance standard time by one hour during the specified period in 15 U.S.C. 260a(a). This exemption applies to areas observing both central and mountain standard time.

Additionally, the bill clarifies that the new provisions will not interfere with the standard time regulations that govern interstate commerce or the timing of actions required by federal officers or departments, as dictated by U.S. law. This ensures that federal operations and regulations remain unaffected by the changes in state timekeeping practices.