This was confirmed in the 1952–1954 Harvard Meteor Project, via photographic observation of orbits. The Project also produced the first evidence that the stream's evolution was influenced by Jupiter. The Delta Aquariids are best viewed in the pre-dawn hours, away from the glow of city lights. Southern Hemisphere viewers usually get a better show because the radiant is higher in the sky during the peak season. Since the radiant is above the southern horizon for Northern Hemisphere viewers, meteors will primarily fan out in all compass points, east, north and west. Few meteors will be seen heading southward, unless they are fairly short and near the radiant.