What US president tried to change the date of Thanksgiving to the third week in November for the shopping season?

The first Thanksgiving was on Thursday, November 26, 1789, and the second Thanksgiving was on Thursday, February 19, 1795.

In 1863, President Lincoln proclaimed that Thanksgiving Day be observed every year on the last Thursday of November, which is the Thursday after Nov. 23 and before Dec. 1. From 1863 through 1938, there were only two years in which Thanksgiving was not observed on the last Thursday of November.

In 1939 and 1940, during the Great Depression, President Franklin Roosevelt made Thanksgiving the third Thursday of November (Nov. 16, 1939 and Nov. 21, 1940) in the hopes of boosting the economy by making the Christmas shopping season longer. So many people were against the change that Congress passed a bill in 1941 which, as a compromise, made Thanksgiving the fourth Thursday of November, which is the Thursday after Nov. 21 and before Nov. 29. President Roosevelt signed it into law on Friday, December 26, 1941.