Thanksgiving originated as three days of prayer and feasting celebrated by the Plymouth colonists in 1621. President George Washington proclaimed the first national Thanksgiving Day on November 26, 1789. In 1863, President Abraham Lincoln declared Thanksgiving an annual holiday to be celebrated on the last Thursday in November. The Thanksgiving menu hasn't changed much from the original one of roast turkey, stuffing, cranberry sauce, and pumpkin pie. These are the main dishes of the New England harvest home feast, and have remained favorites to this day.