1. Nevada was admitted to the Union on October 31, 1864, but it wasn't until February 5, 1866, that the state's first constitution was adopted. This constitution formed the framework for the state's government and established important rights and protections for its citizens.

2. On February 5, 1931, the Nevada State Legislature passed Assembly Bill 98, legalizing gambling in the state. This move paved the way for the construction of large-scale casinos and the development of the Las Vegas Strip, which would become a major tourist destination and one of the world's most famous entertainment hubs.

3. February 5, 1945, was a pivotal moment in the history of the second World War. That day, the Yalta Conference began in Crimea, with President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Soviet Premier Joseph Stalin meeting to discuss the future of post-war Europe. During the conference, the leaders agreed to maintain Soviet dominance in eastern Europe but promised to work towards creating a new international organization to prevent future global conflicts.

4. On February 5, 2019, the Nevada State Legislature became the first in the nation to be majority female. Following the 2018 elections, women held 23 of the Legislature's 63 seats, giving them a 51% majority. This milestone highlighted the important contributions of women in politics and served as an inspiration for women in other states seeking to achieve similar gains in representation.

5. February 5 is also the date of the annual Polar Plunge, a popular fundraiser for Special Olympics Nevada. Participants gather at Lake Las Vegas to take a dip in the freezing waters and raise money for the organization, which provides year-round sports training and athletic competition for children and adults with intellectual disabilities. Since its inception in 2010, the Polar Plunge has raised over $1.3 million for Special Olympics Nevada.