I think you are operating under a misapprehension. There is no disparity.
Both the Hawaiian COLB and this Kenyan Certified Copy of Registration of Birth have the same birth dates, August 4, 1961. The August 5th date, the day after the birth, is the date the birth was officially registered at the record keeping authority in Kenya. The Hawaiian COLB shows that the birth was registeredwith the Hawaiian authorities on August 11, 1961, seven days after the birth.
Bookmark of exhaustion.
Just remember that I believe Kenya would be using the European B.C. format, where no nurses/doctors/hospitals are mentioned to be a full Fletch Bona fide B.C.!!!