This flag became the Official United States flag on May 1st, 1795. Two stars and stripes were added for the admission of Vermont (the 14th State on March 4th, 1791) and Kentucky (the 15th State on June 1st, 1792, and was to last for 23 years. The five Presidents who served under this flag were; George Washington (1789-1797), John Adams (1797-1801), Thomas Jefferson (1801-1809), James Madison (1809-1817), and James Monroe (1817-1825).