In March 1959, United States Congress passed the Hawaii Admission Act and the then U.S. President Dwight D. Eisenhower signed it into law. A referendum was held in Hawaii on June 27, 1959 and residents of Hawaii voted overwhelmingly (17 to 1) for the statehood. So, Hawaii joined as the 50th state into the union of United States of America on August 21, 1959. Current 50-star version of USA flag design was approved after Hawaii was admitted as 50th state of USA on August 21, 1959. Executive Order of President Eisenhower dated August 21, 1959 - provided for the arrangement of the stars in nine rows of stars staggered horizontally and eleven rows of stars staggered vertically. The flag was raised for the first time at 12:01 a.m. on July 4, 1960, at the Fort McHenry National Monument in Baltimore, Maryland.