1. On November 17, 1800, New Hampshire became the ninth state to ratify the United States Constitution. This ensured the ratification of the Constitution and strengthened the union of the United States.

2. In 1869, the first organized ski club in the United States was founded in Berlin, New Hampshire. The club, known as the Nansen Ski Club, was named after Norwegian explorer and skier Fridtjof Nansen.

3. On November 17, 1923, the Boston & Maine Railroad inaugurated its White Mountains Special, a luxurious passenger train that traveled from Boston to the scenic White Mountains of New Hampshire. The train became incredibly popular and helped boost tourism in the region.

4. In 1955, the first microwave oven was installed in a restaurant in Manchester, New Hampshire. The oven was called the "Radarange" and was only available for commercial use at the time.

5. On November 17, 1986, New Hampshire Senator Warren Rudman co-authored the Gramm-Rudman-Hollings Act, which aimed to reduce the federal budget deficit by instituting automatic spending cuts if deficit reduction targets were not met. The act helped bring attention to the issue of deficit reduction and inspired further policy efforts in the area.