S.C. Code Ann. § 16-11-630: Refusing to leave certain public premises during hours when they are regularly closed.

Any person who, during those hours of the day or night when the premises owned or occupied by a state, county or municipal agency are regularly closed to the public, shall refuse or fail, without justifiable cause, to leave those premises upon being requested to do so by a law enforcement officer or guard, watchman or custodian responsible for the security or care of the premises, shall be deemed guilty of a misdemeanor and upon conviction, be fined not more than one hundred dollars or be imprisoned for not more than thirty days.