S.C. Code Regs. 20-17.7
S.C. Code Regs. 20-17.7. Time of Final Bout
1. The final bout shall not end later than 11:59 P.M., unless approved by the Commission Representative.
2. If the semifinal or other advertised bouts have not been held by 10 P.M., they shall be held after the main event bout.