Hours

  • Countway Library Building

    Please refer to the Holiday Calendar below for exceptions to these dates and times.

    • Sunday: 12:00pm-6:30pm
    • Monday: 8:00am-Midnight
    • Tuesday: 8:00am-Midnight
    • Wednesday: 8:00am-Midnight
    • Thursday: 8:00am-Midnight
    • Friday: 8:00am-6:00pm
    • Saturday: 10:00am-6:00pm (Visitor access 10:00am-4:00pm. See visitor access policies.)

  • Countway Library Information Desk

    Floor L1

    The Information Desk is located on the Lower Level 1 (L1) floor of Countway Library.

    • Sunday: 12:00pm-6:00pm
    • Monday: 10:00am-5:00pm
    • Tuesday: 10:00am-8:00pm
    • Wednesday: 10:00am-8:00pm
    • Thursday: 10:00am-5:00pm
    • Friday: 10:00am-5:00pm
    • Saturday: 10:00am-4:00pm

  • Center for the History of Medicine

    Floor L2

    The Center for the History of Medicine is open to all visiting researchers by appointment, including non-HUID holders. Please visit our Schedule a Research Visit page for information.

    • Sunday: Closed
    • Monday: 10:00am-4:00pm by appointment only
    • Tuesday: 10:00am-4:00pm by appointment only
    • Wednesday: 10:00am-4:00pm by appointment only
    • Thursday: 10:00am-4:00pm by appointment only
    • Friday: 10:00am-4:00pm by appointment only
    • Saturday: Closed

  • Gallery of the Center for the History of Medicine

    Fifth floor

    Please visit the Center for the History of Medicine webpage for more detailed information.

    Open to Harvard ID holders only, with the exception of Saturdays.

    • Sunday: 12:00pm-11:00pm
    • Monday: 8:00am-Midnight
    • Tuesday: 8:00am-Midnight
    • Wednesday: 8:00am-Midnight
    • Thursday: 8:00am-Midnight
    • Friday: 8:00am-6:00pm
    • Saturday: 10:00am-6:00pm (Visitor access 10:00am-4:00pm. See visitor access policies.)

  • Holiday Calendar

    (Holiday hours apply to all departments of the library)

    • New Year's Day (Wednesday, January 1, 2025): Closed
    • Martin Luther King, Jr. Day (Monday, January 20, 2025): Open for study space only (no library services available)
    • Presidents' Day (Monday, February 17, 2025): Open for study space only (no library services available)
    • Memorial Day (Monday, May 26, 2025): Closed
    • Juneteenth (Thursday, June 19, 2025): Closed
    • Independence Day (Friday, July 4, 2025): Closed
    • Labor Day (Monday, September 1, 2025): Open for study space only (no library services available)
    • Indigenous Peoples’ Day (Monday, October 13, 2025): Open for study space only (no library services available)
    • Veterans Day (Tuesday, November 11, 2025): Open for study space only (no library services available)
    • Thanksgiving Recess (Thursday, November 27 - Friday, November 28, 2025): Closed
    • Winter Recess (Wednesday, December 24 - Wednesday, December 31, 2025): Closed

Location