The city at 19 degrees south latitude and 146 degrees east longitude is Nadi, located in Fiji.
Latitude: S 42° 1' 58.5407"Longitude: E 146° 35' 29.7821"
Australia is closest to there.
Latitude: 19°15′36″S Longitude: 146°49′01″E
Closest land I know of is Hereheretue atoll at roughly 145E 20S.
The latitude and longitude of Prince William Sound is 60.6150 degrees N, 147.1681 degrees W. Prince William Sound is located in the Gulf of Alaska.
Albury-Wodonga 36°03'S 146°56'E
Approximately: Latitude:-37.471308°, Longitude:144.785153°
There's actually no city there. That point is located offshore in the Bass Strait, about 8 miles off the coast of southeastern Australia. If you were shooting for the center of Melbourne, you've missed your target by almost exactly 100 miles, and landed in the drink.
The coordinates 39°N latitude and 146°E longitude point to a location in Japan, specifically near the eastern coast of Honshu, not far from the city of Hamamatsu in Shizuoka Prefecture. This area is known for its natural beauty and is close to several attractions, including the Pacific coastline and mountainous regions.
It is in the Pacific Ocean. Northern Hemisphere Asia ♥
A set of latitude/longitude coordinates describes a point, not an area. That point is in south-central Alaska, about 15 miles southeast of the center of Valdez.