President Franklin D. Roosevelt signs into law a bill establishing the fourth Thursday in November as the Federal Thanksgiving Day holiday ending the confusion that had taken place since 1939 when FDR had changed the official Thanksgiving to the second to last Thursday of the month.
Since there were five Thursdays and the last Thursday of the month was the last day of the month and there was a worry that it would shorten the Christmas shopping season. Only 32 states had issued similar proclamations while 16 states refused to accept the change creating confusion. More