1. In 1824, trapper Jedediah Smith became the first white man to enter the Utah Valley when he crossed the Wasatch Mountains on October 4. Smith was exploring new fur trapping territories in the west and documented his expedition across the mountains and through the valley in his journal.

2. In 1850, the first conference of The Church of Jesus Christ of Latter-day Saints was held in Salt Lake City on October 4. The conference included the dedication of the newly completed Tabernacle, which would become a centerpiece of the LDS Church's religious and architectural history.

3. In 1883, the first electric streetcar system in Utah began operation on October 4. The streetcar line in Salt Lake City was powered by overhead wires and ran from the Union Pacific Depot to Fort Douglas. The system eventually expanded to cover much of the city and remained in use until 1946.

4. In 1974, Herbie the Love Bug from the Disney movie franchise made an appearance at the Utah State Fair on October 4. The famous car was on display and attracted many fans eager to take pictures with the beloved vehicle.

5. In 2013, a massive rockfall occurred in Zion National Park on October 4, causing the closure of the popular Angels Landing trail. The rockfall, which involved over 300 tons of rock, was the largest in the park's history and made international headlines. The trail was eventually reopened after months of repair work.