This week the U.S. celebrates the holiday of Thanksgiving, which has been an official national holiday since President Abraham Lincoln, after a campaign by magazine editor Sarah Josepha Hale, declared it as such in 1863. In the modern consciousness, Thanksgiving is strongly associated with the near-mythological story of the Pilgrims at Plymouth (the English colonists) and their Wampanoag Indian neighbors, who shared a meal to celebrate the harvest in 1621. However, days of thanksgiving on a variety of occasions have been celebrated throughout American history. Among them have been days for giving thanks to the Creator for the ending of droughts and wars or in celebration of other events, such as the promulgation of the Constitution.