Casimir Pulaski Day is a holiday observed in Illinois on the first Monday of every March in memory of Casimir Pulaski (March 6, 1745 ��“ October 11, 1779), a Revolutionary War cavalry officer born in Poland as Kazimierz Pułaski. He is best known for his contributions to the U.S. military in the American Revolution by training its soldiers and cavalry.
The day is celebrated mainly in areas that have large Polish populations, such as Chicago. The focus of official commemorations of Casimir Pulaski Day in Chicago is at the Polish Museum of America where various city and state officials congregate to pay tribute to Chicago's Polish Community.
This is a separate holiday from the federal observance, General Pulaski Memorial Day, which commemorates Pulaski's death from wounds suffered at the Siege of Savannah on October 9, 1779.
Illinois enacted a law on September 13, 1977, to celebrate the birthday of Casimir Pulaski and held the first official Pulaski Day celebrations in 1978. The bill was introduced by State Senator Norbert A. Kosinski, a Democrat from Chicago, and signed by Thomas C. Hynes, President of the Senate on June 26, 1977. Chicago Public Schools, Cook County government offices, the Chicago Public Library, Springfield Public Schools, and state-wide public and private schools are closed on this holiday.
On November 6, 2009, President Barack Obama signed a joint resolution of the U.S. Senate and House of Representatives making Pulaski an honorary American citizen, 230 years after his death.