Sacagawea Day

Sacagawea Day, observed on December 20, honors Sacagawea, the Lemhi Shoshone woman whose knowledge, courage, and resilience helped support the Lewis and Clark Expedition. As an interpreter and guide, she played an important role in helping the expedition communicate and navigate unfamiliar regions during its journey across the American West.

The observance is an opportunity to learn more about Sacagawea’s life and recognize the contributions of Native women to American history. It also encourages reflection on the many perspectives surrounding the expedition and appreciation for the strength, resourcefulness, and cultural knowledge Sacagawea brought to a challenging and historic undertaking.

Sacagawea Day is observed annually on December 20 to honor Sacagawea, the Lemhi Shoshone woman associated with the Lewis and Clark Expedition of 1804–1806. The observance is commonly linked to her traditionally reported birth date, although the surviving historical record does not establish her exact date of birth with certainty. Sacagawea was born in the region of present-day Idaho and, while still young, was taken captive during a conflict involving the Hidatsa. She later lived among the Hidatsa, where she married the French Canadian trader Toussaint Charbonneau.

Sacagawea joined the expedition in 1805 with Charbonneau and their infant son, Jean Baptiste. Her knowledge of Indigenous languages and western geography helped the expedition communicate and negotiate during parts of its journey, particularly when the party encountered Shoshone communities. Her presence, along with that of her baby, also signaled to some groups that the expedition was not an attacking war party. Historical accounts, however, do not support the simplified idea that she alone guided the expedition; her contributions were part of a much larger effort involving Native interpreters, guides, diplomats, and the expedition’s own members.

Over time, Sacagawea became one of the best-known Indigenous women in United States history. Nineteenth- and twentieth-century accounts often turned her into a symbol of courage, maternal devotion, and peaceful cooperation, sometimes presenting an idealized version of her life while minimizing the violence and coercion she experienced. Her public image expanded through biographies, school lessons, monuments, museums, and, especially, the introduction of the Sacagawea dollar coin in 2000. That coin brought her likeness into everyday public life, although debates have continued over historical representation, the spelling of her name, and whether popular portrayals accurately reflect her identity and experiences.

Observed on December 20, Sacagawea Day provides an opportunity to examine both Sacagawea’s documented role and the larger history surrounding the Lewis and Clark Expedition. It recognizes her resourcefulness and importance while also encouraging a more complete understanding of Native nations, Indigenous women’s roles in diplomacy and travel, and the ways American memory has shaped her story. The day is not a federal public holiday, but it is marked through educational programs and historical discussions that place Sacagawea within the broader history of Indigenous peoples and the United States.