From Wikipedia, we learn:
Thanksgiving Day is a national holiday celebrated primarily in the United States and Canada as a day of giving thanks for the blessing of the harvest and of the preceding year. Several other places around the world observe similar celebrations. It is celebrated on the fourth Thursday of November in the U.S. and on the second Monday of October in Canada.
Fixing the date of the holiday
The reason for the earlier Thanksgiving celebrations in Canada has often been attributed to the earlier onset of winter in the north, which ends the harvest season earlier.
Thanksgiving in Canada did not have a fixed date until the late 19th century. The first official Canadian Thanksgiving occurred on April 15, 1872, when the nation was celebrating the Prince of Wales' recovery from a serious illness.
By the end of the 19th century, Thanksgiving Day was normally celebrated on November 6. However, when Word War I ended, the Armistice Day holiday was usually held during the same week. To prevent the two holidays from clashing with one another, in 1957 the Canadian Parliament proclaimed Thanksgiving to be observed on its present date on the second Monday of October.
Much as in Canada, Thanksgiving in the United States was observed on various dates throughout history. From the time of the Founding Fathers until the time of Lincoln, the date Thanksgiving was observed varied from state to state.
The final Thursday in November had become the customary date in most U.S. states by the beginning of the 19th century. Thanksgiving was first celebrated on the same date by all states in 1863 by a presidential proclamation of Abraham Lincoln.
Influenced by the campaigning of author Sarah Josepha Hale, who wrote letters to politicians for around 40 years trying to make it an official holiday, Lincoln proclaimed the date to be the final Thursday in November in an attempt to foster a sense of American unity between the Northern and Southern states.
On December 26, 1941, President Franklin D. Roosevelt signed a joint resolution of Congress changing the national Thanksgiving Day from the last Thursday in November to the fourth Thursday.
Hope you have a wonderful day.
hang out with me on facebook
stay inspired with my newsletter - get a free PDF tutorial
save time and money at my online store
Thanks for stopping by ~~ Happy Stampin' and Scrappin'!