The Akan people of Ghana and the Ivory Coast frequently name their children after the day of the week they were born and the order in which they were born.
This tradition is shared throughout West Africa due to Akan Influence, from Benin/Dahomey (Fon) and Togo (Ewe), to the Ga, to other West Africans and throughout the African diaspora. For example, in Jamaica the following day names have been recorded: Monday, Cudjoe; Tuesday, Cubbenah; Wednesday, Quaco; Thursday, Quao; Friday, Cuffee; Saturday, Quamin; Sunday, Quashee. English translations of these names were used in the United States during the nineteenth century; Robinson Crusoe's Friday may be conceptually related.
Most Ghanaians have at least one name from this system. Ghana's first president, Kwame Nkrumah, was so named for being born on a Saturday (Kwame) and being the ninth born (Nkrumah). Also, the seventh Secretary-General of the United Nations, Kofi Atta Annan, was so named for being born on a Friday (Kofi) as part of a twin (Atta).