N.C. Gen. Stat. § 45-21.48: Validation of certain foreclosure sales that did not comply with posting requirement.

A sale of real property made on or before July 2, 1985, under a power of sale contained in a mortgage or deed of trust, for which a notice of the sale was not posted at the courthouse door for 20 days immediately preceding the sale, as required by G.S. 45-21.17(1), but was posted at the courthouse door for at least 15 days immediately preceding the sale, is declared to be a valid sale to the same extent as if the notice of the sale had been posted for 20 days; unless an action to set aside the foreclosure sale is not barred by the statute of limitations and is commenced on or before October 1, 1985. (1985, c. 567, s. 2.)