National Library Outreach Day (formerly National Bookmobile Day) celebrates library outreach and the dedicated library professionals who are meeting their patrons where they are. Whether it's a bookmobile stop at the local elementary school, services provided to community homes, or library pop-ups at community gatherings, these services are essential to the community. Each year, National Library Outreach Day is celebrated on Wednesday of National Library Week.

National Library Outreach Day is an opportunity for library advocates to make their support known—through thanking library staff, writing a letter or e-mail to their libraries, or voicing their support to community leaders.

What draws people to the library? Everything! From books and digital resources to job assistance and creative programming, libraries are essential to thriving communities. National Library Week, April 6–12, 2025, is a time to celebrate the many ways libraries bring people together, spark imagination, and support lifelong learning. First celebrated in 1958, National Library Week is a national observance sponsored by the American Library Association and libraries of all types across the country each April.