For a few hundred years, Thanksgiving was celebrated in either late October or early November, before it was declared a national holiday in 1879. It was then, that November 6th was set aside as the official Thanksgiving holiday. But then on January 31, 1957, Canadian Parliament announced that on the second Monday in October, Thanksgiving would be "a day of general thanksgiving to almighty God for the bountiful harvest with which Canada has been blessed." Thanksgiving was moved to the second Monday in October because after the World Wars, Remembrance Day (November 11th) and Thanksgiving kept falling in the same week.
The 49th Parallel
Another reason for Canadian Thanksgiving arriving earlier than its American counterpart is that Canada is geographically further north than the United States, causing the Canadian harvest season to arrive earlier than the American harvest season. And since Thanksgiving for Canadians is more about giving thanks for the harvest season than the arrival of pilgrims, it makes sense to celebrate the holiday in October. So what are the differences between Canadian and American Thanksgiving, other than the date? Not much! Both Canadians and Americans celebrate Thanksgiving with parades, family gatherings, pumpkin pie and a whole lot of turkey!