Columbus Day, observed on the second Monday in October, commemorates the landing of the Genoese explorer Christopher Columbus in the Americas on October 12, 1492 — the voyage, sailing under the Spanish crown, that opened sustained contact between Europe and the Western Hemisphere. For much of the twentieth century it was a straightforward patriotic holiday celebrating discovery, enterprise, and the European settlement of the New World.
Its rise as an American holiday owed much to immigration. Italian Americans, often facing prejudice in the late nineteenth and early twentieth centuries, embraced Columbus as a symbol of their heritage and their place in the national story, and Catholic organizations such as the Knights of Columbus championed the day. After a wave of celebrations on the 400th anniversary in 1892, President Franklin Roosevelt proclaimed Columbus Day a national holiday in 1937, fixing it on the calendar.
In recent decades the holiday has become one of the most contested on the American calendar. Critics emphasize that Columbus's arrival began centuries of conquest, enslavement, and catastrophic epidemics that devastated Indigenous populations, and they argue that honoring him erases that history. Defenders counter that the day celebrates exploration and the contributions of Italian Americans, not the violence that followed, and that judging a 15th-century figure by modern standards distorts the past.
The dispute has reshaped the holiday on the ground. A growing number of states and cities now observe Indigenous Peoples' Day on the same date — either alongside or in place of Columbus Day — to honor Native American history and survival, while other places keep the traditional observance. Columbus Day thus stands as a case study in how a nation argues with its own past, the same date carrying opposite meanings for different Americans.
| Observed | Second Monday in October |
| Marks | Columbus's landing, October 12, 1492 |
| Federal | Proclaimed a national holiday in 1937 |
| Championed by | Italian Americans and the Knights of Columbus |
| Contested | Many places now mark Indigenous Peoples' Day |
| Date | Federal holiday since 1937 |