Well golly, @Christopher -- coming from someone who for so many years has been prone to haring off on tangents in order to make an ostentatious display of just-gleaned trivia only faintly related (or, often, utterly unrelated) to the original topic, your sudden shift to Rigid Adherence to The Question Posed in the OP (and ONLY That Question) is a bit perplexing.But why would you ask about that date? The original question that started the thread was whether Stingray could have influenced the original concept of Star Trek or the design of the bridge. All of that was already settled before 1965, so what happened after has no bearing on the matter.
The only specific thing mentioned in the original post that was initially conceived after that date was the design of the Klingons, and as I said, that was just based in generic '60s Orientalism. Fred Phillips and John Colicos improvised the Klingon makeup on the first day of shooting and went for a "space Mongol" theme.
Why would I ask what I did? Because I wanted to know the answer, and thought I might be able to learn it here. Why else?
I was part of the viewing audience (not to mention the target age group) at the time you said the show aired, yet I had no recollection whatsoever of Stingray (nor of Thunderbirds, for that matter.) Is it such a monstrous thing, really, to want to know why?*
* Rhetorical question -- whether or not you in fact believe it to be a monstrous thing is something you may feel free to keep all to yourself. I don't need to know.
TTFN