I was wondering about that, too. The original series ran from 1963 to 1989. 1975 would be the midpoint of its run, so maybe that's why they went with that particular year.
Or maybe because it was around that time that Tom Baker took the part. For many fans, the Fourth Doctor is their favorite.
These are just guesses; I don't really know.
When you search for it it does have the correct date in search weirdly
shareYup, another weird MC anomaly.
It comes up as 1963 in search:
https://i.ibb.co/DbCmWz8/Screenshot-20220702-155250.png
And when you click on it's embedded IMDb link it says 1963 there as well:
https://i.ibb.co/CHt91PJ/Screenshot-20220702-155101.png
To me, Doctor Who started fully in 1970, after the BBC had almost ditched its stupid practice of recording over older episodes on expensive videotape. It was also shot on film, in colour, and had the best Doctor so far, Jon Pertwee. Things only got better from there!
https://www.imdb.com/title/tt0056751/releaseinfo
USA 29 September 1975
Canada and Australia 1965!
At least some episodes of Dr. Who were seen in at least some parts of the USA before 1975.
I remember beginning to watch Dr. Who in the mid 1970s. I think that the first episode I watched was from the 1975 season, probably an episode of "Revenge of the Cybermen", at the same time or after it was broadcast in the UK. And I remember watching those episodes on my grandmother's color television.
As I remember, I watched the first season of Space 1999 (1975-1977) on black and white tv and the second season on color tv, so the date my grandmother got a color tv should should depend on when the seasons were shown in the USA.
I also remember that Dr. Who was on tv in the USA years before that. I specifically remember watching the ending of "Dr. Who and the Silurians" in the USA at the same time or after it was first broadcast on 14 March 1970.
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