1. The Utah House of Representatives was established on March 12, 1851, as part of the Utah Territorial Legislature. The first session was held in Fillmore, Utah.

2. On March 12, 1894, a massive avalanche struck the town of Ophir, Utah, killing seven people and destroying several buildings. The avalanche was caused by heavy snowfall and high winds.

3. The University of Utah's Rice-Eccles Stadium was dedicated on March 12, 1998. The stadium is named after Robert Rice and Spence Eccles, who donated funds for its construction.

4. On March 12, 2008, Salt Lake City hosted the NCAA Men's Basketball Tournament, which featured four games at the EnergySolutions Arena. The event was a success and generated significant revenue for the city.

5. March 12 is also celebrated as Utah's Arbor Day, a holiday that encourages residents to plant trees and create green spaces in their communities. The holiday was established in 1908 by the Utah State Legislature.