Final answer:
The city near 30S latitude and 30E longitude is East London, located on the southeast coast of South Africa, although Cairo, Egypt is a significant city found slightly north of that latitude.
Step-by-step explanation:
The city located near 30 degrees south latitude and 30 degrees east longitude is Cairo, Egypt. This location is north of the latitude specified for the Cape of Good Hope in South Africa to Lüderitz in southern Namibia. The aforementioned region lies between 26S to 34S latitude and has a longitude median at 17E, which is west of 30E. When looking for the city at 30S and 30E specifically, we refer to a point that is within South Africa, but not near a well-known major city. The 30S, 30E coordinates are closest to the city of East London, South Africa on the southeast coast of the country.