National Oregon Day is observed worldwide every March 8 to recognize Oregon as the 33rd state to join the United States. Established in 2017 by National Day Calendar as part of its National State Days project, the day celebrates Oregon's rich history, including its early Indigenous inhabitants like the Chinook and Klamath tribes, and European exploration beginning in the 16th century. The state's nickname, "The Beaver State," reflects its historical significance in the fur trade, with the beaver also being the official state animal featured on the state flag. Oregon officially became a state on February 14, 1859, although the news of its admission did not reach the state until March 15. National Oregon Day is distinct from Oregon Statehood Day, which commemorates the actual anniversary of statehood.