That document is a fraud. The dates on it are American style month/day/year, most other countries including the UK format dates day/month/year.
That document has Stanley Ann Dunham born in the 29th month of 1942...
they used both styles of dates
Without commenting on authenticity of the CPGH BC, I personally researched the Wiki date format by country page in Sept of 2009 and found that Kenya was one of only three countries, IIRC, employing both the European and US style date formats. When I put this information up on the web, the Wiki page was immediately hacked by an Obot named Mystylplx who flagrantly tried to expunge Kenya as showing dual use. A war ensued for months with folks trying to restore the original data and Obots hacking it to cover for Barry without regard to the truth of the original page.
I just checked the page and the dual date format for Kenya has been restored for the moment. Obots never succeeded in removing the color on the global map showing Kenya as a dual format country, which it still show.