The Ladd Observatory is integrated into the Rhode Island Science curriculum, and is the site of frequent field trips by students from area schools. Over 3000 students, parents, and other visitors participate in its active public science program. Tours are given on clear Tuesday nights, as well as during the day. Attached to Ladd is the newly renovated Transit facility, the nation’s only publicly accessible transit observatory that allows visitors to see first-hand how time is measured through astronomical observation. It has provided open house and outreach activities almost continuously since its opening in 1891. It has served as the time setting/keeping station for Rhode Island, and during World War II was used to train Navy pilots in navigational techniques.