S.D. Codified Laws § 1-25-1.3

The state shall provide public notice of a meeting by posting a copy of the proposed agenda at the principal office of the board, commission, or department holding the meeting. The proposed agenda shall include the date, time, and location of the meeting, and be visible, readable, and accessible to the public. The agenda shall be posted at least seventy-two hours before the meeting is scheduled to start according to the agenda. The seventy-two hours does not include Saturday, Sunday, or legal holidays. The notice shall also be posted on a state website, designated by the commissioner of the Bureau of Finance and Management. For any special or rescheduled meeting, the information in the notice shall be delivered in person, by mail, by email, or by telephone, to members of the local news media who have requested notice. For any special or rescheduled meeting, the state shall also comply with the public notice provisions of this section for a regular meeting to the extent that circumstances permit. A violation of this section is a Class 2 misdemeanor.