Jefferson Davis's Birthday is observed as a state holiday in some parts of the United States, particularly in the South. Jefferson Davis (1808–1889) was the President of the Confederate States of America during the American Civil War. The holiday commemorates his life and contributions to the Confederacy.

King Kamehameha I Day is a state holiday in Hawaiʻi to honor King Kamehameha I (1758–1819), the first monarch to unite the Hawaiian Islands under a single rule. Known as Kamehameha the Great, he is celebrated for his leadership, vision, and contributions to the foundation of the Kingdom of Hawaiʻi.