1. Mountain Meadows Massacre: On July 17, 1857, a group of Mormons with the help of Native Americans ambushed an emigrant wagon train at the Mountain Meadows in southern Utah. Over 120 people were killed in the massacre, making it one of the darkest events in Utah's history.

2. Parade of Progress: On July 17, 1958, Salt Lake City hosted the Parade of Progress, which was a touring exhibit sponsored by General Motors. The exhibit showcased the latest advancements in science, technology, and industrial design and attracted thousands of visitors during its stay in Utah.

3. Pioneer Day: July 17 is celebrated as Pioneer Day in Utah to commemorate the arrival of Mormon pioneers into the Salt Lake Valley in 1847. The day is marked by parades, fireworks, and other festivities across the state.

4. Edna Ferber's Visit: On July 17, 1927, renowned American author Edna Ferber visited Zion National Park in Utah. Her visit inspired her to write the novel "Giant," which was later turned into a movie starring Elizabeth Taylor and James Dean.

5. First Woman Lawyer: On July 17, 1895, Susa Young Gates became the first woman lawyer in Utah after passing the state bar exam. Gates was also a prominent suffragist and women's rights activist in Utah, and her legacy continues to inspire many in the state.