The regular annual session of the General Assembly shall adjourn sine die each year not later than five o'clock p.m. on the second Thursday in May. The regular annual session of the General Assembly can be extended:
S.C. Code § 2-1-180
2016 Act No. 199, Section 3, provides as follows:
"SECTION 3. This act takes effect upon the approval by the Governor and first applies for the next annual regular session of the General Assembly."
2019 Act No. 1, Section 97, provides as follows:
"SECTION 97. The Code Commissioner is directed to change all references to 'President Pro Tempore', 'President Pro Tempore of the Senate', or 'President of the Senate Pro Tempore' not specifically addressed in this act to 'President of the Senate'."