N.C. Gen. Stat. § 147-34: Office and office hours.

The Secretary of State shall attend at his office, in the City of Raleigh, between the hours of 10 o'clock A.M. and three o'clock P.M., on every day of the year, Sundays and legal holidays excepted. (1868-9, c. 270, s. 44; 1870-1, c. 111; Code, s. 3339; Rev., s. 5344; C.S., s. 7652.)