What is the approximate longitude and mainland africas southermost point

Accra, Ghana:5°33'N/ 02°11'W

Algiers, Algeria:36°45'N/ 3°2'E

Cairo, Egypt:30°2'N/ 31°14'E

Cape Town, South Africa:33°55'S/ 18°25'E

Dakar, Senegal:14°45'N/ 17°19'W

Djibouti, Djibouti:11°49'N/ 42°35'E

Lusaka, Zambia:15°24'S/ 28°17'E

Nairobi, Kenya:1°17'S/ 36°49'E

Windhoek, Namibia:22°33'S/ 17°4'E

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