Thanksgiving Day, a traditional western festival, is an original festival created by the American people and also a holiday for Americans to gather together. At the beginning, there was no fixed date for Thanksgiving, which was temporarily decided by the states in the United States. It was not until 1863, after the independence of the United States, that President Lincoln declared Thanksgiving a national holiday. In 1941, the United States Congress officially designated the fourth Thursday in November as "Thanksgiving Day". The Thanksgiving holiday usually lasts from Thursday to Sunday.