Leif Erikson Day, observed annually on October 9th, commemorates the Norse explorer Leif Erikson. History credits Erikson with leading the first European expedition to reach the North American continent, circa 1000 CE. This predates Christopher Columbus's arrival by nearly five centuries.
During the Norse-American Centennial at the Minnesota State Fair in 1925, President Calvin Coolidge officially acknowledged Leif Erikson as the discoverer of America.
Thanks to the significant efforts of Rasmus Anderson, Wisconsin became the first U.S. state to officially recognize Leif Erikson Day as a state holiday in 1929.
Following Wisconsin's lead, Minnesota also declared Leif Erikson Day as an official state holiday in 1931.
President Franklin D. Roosevelt signed House Joint Resolution 26 on June 19, 1935, officially recognizing Leif Erikson Day in the United States for that year.
Following the signing of House Joint Resolution 26, President Roosevelt issued Presidential Proclamation 2135 on September 11, 1935, designating October 9th of that year as Leif Erikson Day.
The Legislative Assembly of Saskatchewan, influenced by the Leif Erikson Memorial Association of Saskatchewan, proclaimed October 9th as Leif Ericsson Day through an order-in-council in 1936.
By 1956, Leif Erikson Day was officially observed in seven U.S. states: Wisconsin, Minnesota, South Dakota, Illinois, Colorado, Washington, and California, as well as in the Canadian province of Saskatchewan.
In 1960, the idea that Vikings were the first Europeans to reach the New World, popularized by Rasmus B. Anderson's book, was officially verified.
During the 88th Congress (1963-1964), twelve different resolutions were introduced by members of Congress, aiming to establish an annual presidential proclamation for Leif Erikson Day.
President Lyndon B. Johnson signed House Joint Resolution 393 into law on September 2, 1964, which became Public Law 88–566, requiring the president to annually proclaim October 9th as Leif Erikson Day.
In 2012, Leif Erikson Day was celebrated in Las Vegas, Nevada, highlighting the holiday's reach beyond traditional areas with large Nordic populations.