Chester Fritz Library announces summer hours Chester Fritz Library lists summer hours in effect Monday, May 18 through Friday, August 7: Monday - Thursday - 7:45 a.m. to 9 p.m. Friday 7:45 a.m. to 4:30 p.m. Saturday the library will be closed, Sunday 5 p.m. to 9 p.m. -- Laura Eider, Central Services Clerk, Chester Fritz Library, lauraeider@mail.und.nodak.edu, 70177702189