Library Hours & Building Access

The Anderson Academic Commons (AAC) is home to more than just the Library. The hours listed here are for the AAC and Library services, as well as the Music Library (located in the Lamont School of Music). Hours will vary for study and tutoring support services located in the AAC.


AAC Building Access


Only current students and DU employees who have been cleared to return to campus may enter the building. Each person must swipe their DU ID to enter and follow all current campus COVID-19 protocols.

Visitor and alumni access is not allowed at this time.

Current Weekly Hours

AAC and Main Library Hours

General Hours During Academic Quarters

  • Monday–Thursday: 7:00 a.m. to 12:00 p.m.
  • Friday: 7:00 a.m. to 10:00 p.m.
  • Saturday: 9:00 a.m. to 10:00 p.m.
  • Sunday: 10:00 a.m. to 12:00 a.m.


General Interterm Hours

(except campus holidays and closures)

  • Monday–Friday: 9:00 a.m. to 5:00 p.m.
  • Saturday–Sunday: 1:00 p.m. to 5:00 p.m.


Research Center Desk

General Hours During Academic Quarters

(except campus holidays and closures)

  • Monday–Thursday: 9:00 a.m. to 9:00 p.m.
  • Friday: 9:00 a.m. to 5:00 p.m.
  • Saturday: 10:00 a.m. to 6:00 p.m.
  • Sunday: 12:00 p.m. to 9:00 p.m.

Research Consultation Hours and Availability

Special Collections and Archives

The Special Collections Reading Room is available by appointment only to currently enrolled students and DU employees cleared for campus access.

Fall, Winter and Spring, During Academic Quarters:


  • 9:00 a.m. to 12:00 p.m. & 1:00 p.m. to 5:00 p.m.
  • CLOSED 12:00 p.m. to 1:00 p.m.

Academic Interterms, University Closures, and Summer Quarter:


  • 1:00 p.m. to 5:00 p.m.

Music Library

The Music Library is open on the following schedule when classes are in session:

  • Monday–Thursday: 8:30 a.m. to 10:00 p.m.
  • Friday: 8:30 a.m. to 6:00 p.m.
  • Saturday–Sunday: 11:00 a.m. to 5:00 p.m.

During school breaks and interterms:

  • Monday–Friday: 9:00 a.m. to 4:30 p.m.