N.C. Gen. Stat. § 160A-191
No ordinance regulating or prohibiting business activity on Sundays shall be enacted unless the council shall hold a public hearing on the proposed ordinance. Notice of the hearing shall be published once each week for four successive weeks before the date of the hearing. The notice shall fix the date, hour and place of the public hearing, and shall contain a statement of the council's intent to consider a Sunday-closing ordinance, the purpose for such an ordinance, and one or more reasons for its enactment. No ordinance shall be held invalid for failure to observe the procedural requirements for enactment imposed by this section unless the issue is joined in an appropriate proceeding initiated within 90 days after the date of final enactment. This section shall not apply to ordinances enacted pursuant to G.S. 18B-1004(d).
N.C. Gen. Stat. § 160A-191