In the United States, Thanksgiving, or Thanksgiving Day, is an annual one-day celebration to give thanks for the things that one has at the end of the harvest season. Thanksgiving is celebrated on the fourth Thursday of November. Certain kinds of foods are traditionally served at Thanksgiving meals. Turkey is usually the featured item at any Thanksgiving table (which is why Thanksgiving is sometimes referred to as "Turkey Day"). Stuffing, mashed potatoes with gravy, sweet potatoes, cranberry sauce, corn other fall vegetables, yams, and pumpkin pie are commonly associated with Thanksgiving dinner. All of these dishes were actually native to the Americas, and were introduced as a new food source to the Europeans when they arrived.