Wrong.
My date Dominion status proclaimed: December 12, 1963. (In a different post, but still February 14, 1964 is after that date and before December 12, 1964)
Your date Dominion status proclaimed: December 12, 1963.
My date Republic proclaimed: December 12, 1964.
Your date Republic proclaimed: December 12, 1964.
Nope, your dates agree with mine. So if I'm wrong, you are too.
Jamuhuri (Republic) Day - December 12, 1963: commemorates the use of Republic.