1. In 1962, the Seattle World's Fair hosted a special event called "Space Day" on October 5. The day featured presentations and exhibits about space exploration and was attended by NASA officials and astronauts.

2. On October 5, 1988, the Washington State Supreme Court ruled that the state's anti-discrimination law protected gay and lesbian workers from discrimination in the workplace.

3. The first Sunday of October is designated as "Neighborhood Day" in Washington, D.C. This day encourages residents to get to know their neighbors and build stronger communities.

4. In 1936, the Grand Coulee Dam on the Columbia River in Washington began generating electricity for the first time on October 5. The dam is one of the largest hydroelectric power stations in the world.

5. On October 5, 2005, the University of Washington announced a partnership with Google to digitize its library collections. This partnership allowed Google to scan and make available online millions of books and other materials from the university's libraries.