Point Udall is at the east end of St. Croix in the U.S. Virgin Islands is the easternmost point, by travel, not longitude in the United States including territories and insular areas. It was named for Stewart Udall, United States Secretary of the Interior under Presidents John F. Kennedy and Lyndon Johnson. A sundial known as the Millennium Monument was built above Point Udall for the New Year's celebration in 2000, it marks the azimuth of the first U.S. sunrise of that year. From the monument an informal trail of moderate difficulty leads down to the point, composed of uplifted and rotated volcanic rock. The westernmost point of the United States by travel, not longitude, which is in Guam, is also named Point Udall, in honor of Stewart's brother, Morris Udall.