1. Statehood Day: September 4, 2021, marks the 154th anniversary of Nebraska's statehood. The state became the 37th state admitted to the Union on this date in 1867.

2. Arbor Day: J. Sterling Morton, a Nebraska settler, established Arbor Day in Nebraska in 1872. The day is celebrated worldwide for planting trees and promoting conservation efforts.

3. First College Football Game: On September 4, 1893, Nebraska played its first-ever football game against the Omaha YMCA team, winning 10-0. This game was the beginning of a tradition of football excellence in the state.

4. Harry Truman's First Campaign Speech: On September 4, 1948, Harry Truman delivered his first campaign speech for his presidential campaign in Lincoln, Nebraska.

5. Nebraska's First Gold Medal: On September 4, 2000, Rulon Gardner, a native of Afton, Wyoming, and a former wrestler at the University of Nebraska, won the Olympic gold medal in Greco-Roman wrestling at the 2000 Summer Olympics in Sydney, Australia. This was Nebraska's first Olympic gold medal.