which capital cities are located east of the prime meridian of 0 degrees
The Equator (0 degrees latitude) crosses the Prime Meridian (0 degrees longitude) off the coast of Gabon, Africa.
Accra, Ouagadougou, Bamako, Rabat, Nouakchott, Banjul, Dakar, Bissau, Conakry, Freetown,and Monrovia.
A small proportion is, most of Africa is east of the prime meridian.
The Prime Meridian (located at 0 degrees longitude) goes through the western part of Africa from Algeria in the North to Ghana in the South, passing through parts of Mali, Burkina Faso, and Togo on the way.
Accra, the capital city of Ghana, lies on the Greenwich Meridian line in Africa.
If you meant 18 degrees north latitude and 77 degrees west longitude, then the island is Jamaica. And, Nairobi is the capital of Kenya, and Kenya is not an island. Kenya is located in Africa.
Africa
The Prime Meridian passes through the city of Accra in Africa. Accra is the capital of the West African country of Ghana.
africa
The prime meridian is located at Greenwich, England in the district of South East London and is denoted as longitude 0 degrees. The prime passes through Europe, Africa, and Antarctica.
It is located in West Africa, more or less half on either side of the Greenwich Meridian.
Africa and Russia