Jefferson's Birthday (April 13) officially honors the birth of the third U.S. president, Thomas Jefferson. This day was recognized by Franklin D. Roosevelt as part of Presidential Proclamation 2276, issued on March 21, 1938. He was the principal author of the U.S. Declaration of Independence and is known as one of the country's founding fathers.
More recently, President George W. Bush issued proclamation 8124 on April 11, 2007, stating that "... on Thomas Jefferson Day, we commemorate the birthday of a monumental figure whose place in our Nation’s history will always be cherished".