1. Nevada Became a State: September 18, 1864 is a significant date in Nevada as it was the day the state officially became the 36th state of the United States. President Abraham Lincoln signed the congressional bill that granted statehood to Nevada.

2. First Air Race in Nevada: In 1913, the first air race in Nevada was held on September 18 in Reno. The event attracted pilots from across the country who competed in a variety of aerial events, including speed and altitude contests.

3. Nevada Flag Adopted: The official state flag of Nevada was adopted on September 18, 1929. The blue flag features the state's emblem, which includes silver and gold mining tools, a sagebrush branch, and a banner that reads "Battle Born," a nod to the state's Civil War history.

4. Hoover Dam Dedicated: On September 18, 1935, the Hoover Dam was dedicated by President Franklin D. Roosevelt. The dam, which is located on the Colorado River between Nevada and Arizona, was built as a way to control the river and provide water and hydroelectric power to the surrounding areas.

5. Elko County Fair and Rodeo Begins: For over 100 years, the Elko County Fair and Rodeo has been a staple event for Nevadans. The fair, which includes a variety of livestock shows, carnival rides, and rodeo events, usually begins on September 18 and runs for several days in Elko, Nevada.