For the past 76 years, since Abraham Lincoln's original proclamation, Thanksgiving had fallen on the last Thursday in November. With five Thursdays in 1939, that meant Thanksgiving would be celebrated on Nov. 30.
The change didn't fly with everyone. Sixteen states refused to move Thanksgiving, meaning the holiday was celebrated on two separate days in the United States for two years.
Congress decided to fix the tumultuous turkey time once and for all in 1941 by agreeing that the fourth Thursday in November would be Thanksgiving. Roosevelt agreed and signed the resolution on Dec. 26, 1941 -- finally restoring order at the Thanksgiving table.