S.D. Codified Laws § 37-30-28
§ 37-30-28. Permissible hours as to use of automated telephone dialing system -- Disconnection requirements
-- Failure to comply as misdemeanor
No person may use an automated telephone dialing system to make a telephone solicitation to any telephone
number in the state except weekdays between 9 a.m. and 9 p.m., according to the time in this state. In
addition, the person using the device to place the call shall ensure that the device disconnects no more than
twenty seconds following the disconnection of the telephone number called. A violation of this section is a
Class 2 misdemeanor.