Hours

  • Countway Library Building

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

    • 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

  • Countway Library Information Desk

    Floor L1

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

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

  • Countway Library Services
    • Sunday: Closed
    • Monday: Virtual
    • Tuesday: Virtual
    • Wednesday: Virtual
    • Thursday: Virtual
    • Friday: Virtual
    • Saturday: Closed

  • 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. 

    • 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

  • Holiday Calendar

    (Holiday hours apply to all departments of the library)

    • Labor Day (September 4): Open for study space only (no library services available)
    • Indigenous Peoples’ Day (October 9): Open for study space only (no library services available)
    • Veterans Day (November 10): Open for study space only (no library services available)
    • Thanksgiving Break (November 23 - 24): Closed
    • Winter Recess (December 22, 2023 - January 2, 2024): Closed
    • Martin Luther King, Jr. Day (January 16): Open for study space only (no library services available)
    • Presidents' Day (February 20): Open for study space only (no library services available)
    • Memorial Day (May 29): Closed
    • Juneteenth (June 19): Closed
    • Monday Before Independence Day (July 3): Reduced hours (8am-9pm) open for study space only (no library services available)
    • Independence Day (July 4): Closed

Location