13 Ọgọọst bu ubochi nke 13th (nke iri na atọ) na onwa ana kpo Ọgọọst. Na Gregorian calender, 13 Ọgọọst bu ubochi nke 225th (226th na afo nke ana-kpo leap year) na afo. Anyi nwere agugu ubochi 140 du mgbe afo na agwu.