(A) An application for relief filed pursuant to this chapter must be filed within one year after the entry of a judgment of conviction or within one year after the sending of the remittitur to the lower court from an appeal or the filing of the final decision upon an appeal, whichever is later.

(B) When a court whose decisions are binding upon the Supreme Court of this State or the Supreme Court of this State holds that the Constitution of the United States or the Constitution of South Carolina, or both, impose upon state criminal proceedings a substantive standard not previously recognized or a right not in existence at the time of the state court trial, and if the standard or right is intended to be applied retroactively, an application under this chapter may be filed not later than one year after the date on which the standard or right was determined to exist.

(C) If the applicant contends that there is evidence of material facts not previously presented and heard that requires vacation of the conviction or sentence, the application must be filed under this chapter within one year after the date of actual discovery of the facts by the applicant or after the date when the facts could have been ascertained by the exercise of reasonable diligence.