African Diaspora Ancestral Commemoration Institute, ADACI African Diaspora Ancestral Commemoration Institute (ADACI) The African Diaspora Ancestral Commemoration Institute (ADACI) is dedicated to institutionalizing the commemoration of the millions of Africans lost during the Atlantic and other periods of enslavement. A winner of the 2004 Community Service Award of the Millennium Club of the National Association of Negro Business & Professional Women’s Clubs, Inc. (NANBPWC, Inc.), ADACI has provided outstanding educational and community-based programming in Metropolitan Washington, D.C. and the surrounding areas for nearly 20 years.