1. The first graduation ceremony of the University of Nebraska-Lincoln was held on May 23, 1877. The university, which was established in 1869, awarded degrees to 10 students during its first commencement.

2. On May 23, 1919, the Nebraska Legislature ratified the 19th amendment to the U.S. Constitution, which granted women the right to vote. Nebraska was the 14th state to ratify the amendment.

3. The first-ever cornhusking contest was held in Nebraska on May 23, 1924, in the town of Akron. The event was organized by the Nebraska State Cornhusking Association and attracted over 5,000 spectators.

4. On May 23, 1967, the Lincoln Municipal Airport was renamed the Lincoln Airport in honor of Charles Lindbergh. Lindbergh had made a visit to the airport in 1928 during his historic transatlantic flight.

5. The University of Nebraska-Omaha held its first-ever graduation ceremony on May 23, 1970, in the Civic Auditorium. A total of 456 students received degrees during the ceremony.