1. Statehood Day: January 1, also known as New Year's Day, 1864, is a significant day in Nevada history as it was the day the state officially became the 36th state in the Union.

2. Mining Boom: In the late 1800s, many mines, including the Comstock Lode, were discovered in Nevada, leading to a mining boom that contributed significantly to the state's economy. January 1, 1875 saw the beginning of a silver mining boom in Tonopah, which helped to establish the town as a major commercial center.

3. Prohibition: On January 1, 1919, the temporary nationwide prohibition of alcohol sale went into effect after the 18th Amendment was ratified. Nevada, however, was one of the few states that remained opposed to Prohibition and continued to sell alcohol in the state.

4. Legalized Gambling: On January 1, 1931, Nevada legalized gambling, which led to the establishment of Las Vegas as the center of the gambling industry. Before the legalization, gambling was only permitted in private clubs, and the industry was limited to small-scale games.

5. Hoover Dam: On January 1, 1935, the construction of Hoover Dam, one of the largest dams in the world, was completed. The dam spans the Colorado River, creating Lake Mead, and provides hydroelectric power to millions of people. Its construction also contributed to the development of nearby towns and cities.