S.D. Codified Laws § 29A-2-108 (2026)
An individual is treated as living at that time if the individual was conceived prior to a decedent's death, born within ten months of a decedent's death, and survived one hundred twenty hours or more after birth.
Source: SL 1995, ch 167 , § 2-108; SL 2007, ch 247 , § 3.