That's in the Indian ocean, near Port Louis, off the coast of Madagascar.
The coordinates 20 degrees south and 57 degrees east point to an area in the Indian Ocean, near the coast of Madagascar. This location is not directly on land, but it is relatively close to the eastern coast of Africa. The nearest country to this point would be Madagascar, which lies to the southeast.
Mauritius
57 degrees east latitude and 21 degrees south longitude corresponds to a location in the southern hemisphere, on the Tropic of Capricorn in the Indian Ocean off the coast of Madagascar.
This point is in the Indian Ocean, about 800 miles east of Mauritius.
57 degrees latitude is a line on Earth that is located 57 degrees north or south of the equator. At 57 degrees north latitude, you would be in the northern hemisphere, while at 57 degrees south latitude, you would be in the southern hemisphere.
Mauritius
57 degrees east latitude and 21 degrees south longitude corresponds to a location in the southern hemisphere, on the Tropic of Capricorn in the Indian Ocean off the coast of Madagascar.
Denmark is located at 57 degrees north and 10 degrees south.
This point is in the Indian Ocean, about 800 miles east of Mauritius.
57 degrees latitude is a line on Earth that is located 57 degrees north or south of the equator. At 57 degrees north latitude, you would be in the northern hemisphere, while at 57 degrees south latitude, you would be in the southern hemisphere.
The city located at 57 degrees north and 24 degrees east is Helsinki, the capital of Finland.
That point is in the sea between Denmark and Sweden, about 49 miles due south of Göteborg.
Oliva is a village in the district of Flacq in the country of Mauritius. It is located roughly at 20 degrees 17 minutes, 51 seconds South by longitude 57 degrees, 43 minutes, 32 seconds East.
According to this, and if I am correct it is just of the tip of South America, hopefully in the ocean.
Denmark.
There is no such place. No point on Earth has both a north and a south coordinate (except perhaps for places on the equator, where the latitude is zero so it doesn't matter whether it's called zero north or zero south).
I-39 South I-74 East I-57 South I-24 East I-75 South