National Vermont Day is observed worldwide on October 12, recognizing Vermont as the 14th state to join the United States. This day was created by the National Day Calendar as part of its National State Days project, which celebrates states in the order they entered the Union. Vermont, located in the Northeastern United States and part of the New England region, is known for its scenic Green Mountains, which inspired its name derived from the French phrase "les verts monts." The state has a rich history, including its early inhabitants, the Abenaki and Mohawk tribes, and its role in the American Revolution as the Vermont Republic, which adopted the first constitution in North America to ban adult slavery. Celebrations on National Vermont Day may include educational events and activities that highlight the state's unique history and culture.