1. In 1914, the Utah State Capitol building was completed on April 15th. This iconic landmark has since served as the center of Utah's government and a symbol of its history and culture.

2. On April 15, 1938, the town of Santa Clara experienced a major flood that destroyed many homes and businesses. The flood was caused by heavy rainfall and caused widespread damage to the area.

3. In 1947, the first commercially produced uranium ore in Utah was shipped on April 15th. This marked the beginning of Utah's involvement in the atomic energy industry, which had a lasting impact on the state's economy and culture.

4. On April 15, 1966, the Spiral Jetty art installation was completed on the shore of the Great Salt Lake. Created by artist Robert Smithson, the massive spiral of rocks has become one of Utah's most famous landmarks.

5. In 2000, the first same-sex couple in Utah was granted legal recognition as domestic partners on April 15th. This historic ruling represented a significant victory for the LGBTQ+ community in Utah and helped pave the way for further progress in the state.