 PA 1 became daily in 1962–63, making different en route stops on different days of the week; in January 1963 it left San Francisco at 0900 daily and was scheduled into New York 56 hr 10 min later.Los Angeles replaced San Francisco in 1968; when Boeing 747s finished replacing 707s in 1971 all stops except Tehran and Karachi were served daily in each direction.For a year or so in 1975–76 Pan Am finally completed the round-the-world trip, New York to New York.