15 Ọgọọst bu ubochi nke 15th (nke iri na ise) na onwa ana kpo Ọgọọst. Na Gregorian calender, 15 Ọgọọst bu ubochi nke 227th (228th na afo nke ana-kpo leap year) na afo. Anyi nwere agugu ubochi 138 du mgbe afo na agwu.