Thanksgiving is a public holiday celebrated on the fourth Thursday of November in the United States. It originated as a harvest festival. Thanksgiving has been celebrated nationally on and off since 1789, after Congress requested a proclamation by George Washington. It has been celebrated as a federal holiday every year since 1863, when, during the American Civil War, President Abraham Lincoln proclaimed a national day of "Thanksgiving and Praise to our beneficent Father who dwelleth in the Heavens," to be celebrated on the last Thursday in November. On October 6, 1941, both houses of the U.S. Congress passed a joint resolution fixing the traditional last-Thursday date for the holiday beginning in 1942. However, in December of that year the Senate passed an amendment to the resolution that split the difference by requiring that Thanksgiving be observed annually on the fourth Thursday of November, which was usually the last Thursday and sometimes (two years out of seven, on average) the next to last. The amendment also passed the House, and on December 26, 1941, President Roosevelt signed this bill, for the first time making the date of Thanksgiving a matter of federal law and fixing the day as the fourth Thursday of November. Together with Christmas and the New Year, Thanksgiving is a part of the broader fall/winter holiday season in the U.S.