Thanksgiving Day is a holiday celebrated primarily in the United States and Canada. Thanksgiving is celebrated each year on the second Monday of October in Canada and on the fourth Thursday of November in the United States. So today it's Thanksgiving Day.
The Thanksgiving holiday is a four-day holiday over the weekend. Families and friends usually eat a special meal together (usually with a turkey as the main dish). This meal also usually includes mashed potatoes, cranberry sauce, pumpkin pie, several casseroles, and stuffing. This meal is made to remember a group of settlers called the Pilgrims, who came from England in 1620 to make a new life in North America.