S.C. Code Ann. § 15-29-30: Publication in three successive weeks as equivalent of publication for three weeks or twenty-one days.

When the statute requires a notice to be published in a newspaper for three weeks or twenty-one days the publication of such notice in three successive weeks shall be sufficient if at least sixteen days shall have expired after the date of the first publication and on or before the date fixed for the doing of the thing of which notice is given.