Thanksgiving is an annual American Federal holiday to express thanks for one's material and spiritual possessions. The period from Thanksgiving Day to New Year's Day often is called the holiday season. Most people celebrate by gathering at home with family or friends for a holiday feast. Thanksgiving generally is considered secular, or at least nonsectarian, and is not based on any specific religious canon or dogma. Though the holiday's origins can be traced to harvest festivals that have been celebrated in many cultures since ancient times, the American holiday has religious undertones related to the deliverance of the English settlers after the brutal winter at Plymouth, Massachusetts. Since being fixed at the fourth Thursday in November by law in 1941, the holiday in the United States can occur as early as November 22 to as late as November 28. As it is a Federal holiday, all United States government offices are closed and employees are paid for that day. It is also a holiday for the New York Stock Exchange, and also for most other financial markets and financial services companies.

Information courtesy of Wikipedia

The First Thanksgiving Celebrations in the New World

The date and whereabouts of the first Thanksgiving celebration is a topic of modest contention, though the earliest recorded Thanksgiving ceremony took place on September 8, 1565, when 600 Spanish settlers, under the leadership of Pedro Menéndez de Avilés, landed at what is now St. Augustine, Florida, and immediately held a Mass of Thanksgiving for their safe delivery to the New World; there followed a feast and celebration. As the La Florida colony did become part of the United States, this can be classified as the first Thanksgiving. El Paso, Texas, has also been said to be the site of the first Thanksgiving to be held in what is now known as the United States, though that was not a harvest festival. Spaniard Don Juan de Oñate ordered his expedition party to rest and conducted a mass in celebration of Thanksgiving on April 30, 1598.

Despite scholarly research to the contrary, the traditional "first Thanksgiving" is venerated as having occurred at the site of Plymouth Plantation, in 1621. Squanto, a Patuxet Native American who resided with the Wampanoag tribe, taught the English Settlers commonly called the Pilgrims how to catch eel and grow corn and served as an interpreter for them (Squanto had learned English as a slave in Europe and travels in England). Without Squanto's help the Pilgrims of the Plymouth Colony might not have survived in the New World. There is still controversy about what kind of relationship Native Americans and Europeans might truly have had, yet a smallpox plague which killed 90 to 96 percent of the local Native American population in the area just prior to the actual arrival of the Pilgrims in 1620. The Pilgrims set apart a day of celebration immediately after their first harvest in 1621. At the time, this was not regarded as a Thanksgiving observance; harvest festivals were existing parts of English and Wampanoag tradition alike. The Pilgrims did not hold a true Thanksgiving until 1623, when it followed a drought, prayers for rain, and a subsequent rain shower. Irregular Thanksgivings continued after favorable events and days of fasting after unfavorable ones. In the Plymouth tradition, a Thanksgiving Day was a church observance, rather than a feast day.

Whereas it is the duty of all Nations to acknowledge the providence of Almighty God, to obey his will, to be grateful for his benefits, and humbly to implore his protection and favor, and whereas both Houses of Congress have by their joint Committee requested me "to recommend to the People of the United States a day of public thanksgiving and prayer to be observed by acknowledging with grateful hearts the many signal favors of Almighty God especially by affording them an opportunity peaceably to establish a form of government for their safety and happiness. Now therefore I do recommend and assign Thursday the 26th day of November next to be devoted by the People of these States to the service of that great and glorious Being, who is the beneficent Author of all the good that was, that is, or that will be. That we may then all unite in rendering unto him our sincere and humble thanks, for his kind care and protection of the People of this Country previous to their becoming a Nation, for the signal and manifold mercies, and the favorable interpositions of his providence, which we experienced in the course and conclusion of the late war, for the great degree of tranquility, union, and plenty, which we have since enjoyed, for the peaceable and rational manner, in which we have been enabled to establish constitutions of government for our safety and happiness, and particularly the national One now lately instituted, for the civil and religious liberty with which we are blessed; and the means we have of acquiring and diffusing useful knowledge; and in general for all the great and various favors which he hath been pleased to confer upon us. And also that we may then unite in most humbly offering our prayers and supplications to the great Lord and Ruler of Nations and beseech him to pardon our national and other transgressions, to enable us all, whether in public or private stations, to perform our several and relative duties properly and punctually, to render our national government a blessing to all the people, by constantly being a Government of wise, just, and constitutional laws, discreetly and faithfully executed and obeyed, to protect and guide all Sovereigns and Nations (especially such as have shown kindness unto us) and to bless them with good government, peace, and concord. To promote the knowledge and practice of true religion and virtue, and the increase of science among them and Us, and generally to grant unto all Mankind such a degree of temporal prosperity as he alone knows to be best. Given under my hand at the City of New York the third day of October in the year of our Lord 1789.

The year that is drawing towards its close, has been filled with the blessings of fruitful fields and healthful skies. To these bounties, which are so constantly enjoyed that we are prone to forget the source from which they come, others have been added, which are of so extraordinary a nature, that they cannot fail to penetrate and soften even the heart which is habitually insensible to the ever watchful providence of Almighty God. In the midst of a civil war of unequaled magnitude and severity, which has sometimes seemed to foreign States to invite and to provoke their aggression, peace has been preserved with all nations, order has been maintained, the laws have been respected and obeyed, and harmony has prevailed everywhere except in the theatre of military conflict; while that theatre has been greatly contracted by the advancing armies and navies of the Union. Needful diversions of wealth and of strength from the fields of peaceful industry to the national defense, have not arrested the plough, the shuttle, or the ship; the axe had enlarged the borders of our settlements, and the mines, as well of iron and coal as of the precious metals, have yielded even more abundantly than heretofore. Population has steadily increased, notwithstanding the waste that has been made in the camp, the siege and the battle-field; and the country, rejoicing in the consciousness of augmented strength and vigor, is permitted to expect continuance of years, with large increase of freedom. No human counsel hath devised nor hath any mortal hand worked out these great things. They are the gracious gifts of the Most High God, who, while dealing with us in anger for our sins, hath nevertheless remembered mercy. It has seemed to me fit and proper that they should be solemnly, reverently and gratefully acknowledged as with one heart and voice by the whole American people. I do therefore invite my fellow citizens in every part of the United States, and also those who are at sea and those who are sojourning in foreign lands, to set apart and observe the last Thursday of November next, as a day of Thanksgiving and Praise to our beneficent Father who dwelleth in the Heavens. And I recommend to them that while offering up the ascriptions justly due to Him for such singular deliverances and blessings, they do also, with humble penitence for our national perverseness and disobedience, commend to his tender care all those who have become widows, orphans, mourners or sufferers in the lamentable civil strife in which we are unavoidably engaged, and fervently implore the interposition of the Almighty Hand to heal the wounds of the nation and to restore it as soon as may be consistent with the Divine purposes to the full enjoyment of peace, harmony, tranquility and Union. In testimony whereof, I have hereunto set my hand, and caused the seal of the United States to be affixed. Done at the city of Washington, this third day of October, in the year of our Lord one thousand eight hundred and sixty-three, and of the independence of the United States the eighty-eighth.

In more recent years, two turkeys have been pardoned, in case the original turkey becomes unavailable for presidential pardoning. Since 2003 the public has been invited to vote for the two turkeys' names. They were named Stars and Stripes in 2003 and 2004's turkeys were called Biscuit and Gravy. In 2005 the public decided on Marshmallow and Yam, in 2006 on Flyer and Fryer, and in 2007 on May and Flower. Since 2005, the two turkeys have been flown first class on United Airlines from Washington, D.C. to the Los Angeles area where they become the Grand Marshals of Disneyland's annual Thanksgiving Day parade down Main Street. The two turkeys then live out the rest of their relatively short lives in Disneyland's Frontierland ranch. Since 1970, a group of Native Americans and other assorted protesters (mostly of progressive political persuasion) have held a National Day of Mourning protest on Thanksgiving at Plymouth Rock in Plymouth, Massachusetts in the name of social equality and in honor of political prisoners.

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