Barnes & Noble at UND lists summer hours Barnes & Noble at UND lists their summer hours: Monday through Friday, 9 a.m. to 6 p.m.; Saturday, 10 a.m. to 5 p.m.; closed Sundays until Aug. 3. -- Michelle Abernathey, General Manager, Barnes & Noble at UND, michelle_aberanthey@mail.und.nodak.edu, 777-2103