ST-One
Vice Admiral
If you'd like to talk about the differences between the two universes, that would be fine and entertaining. But please remove the words "canon violation" from your post title. Canon has not been violated. Two universes, two histories. Each is canon within its own self.
Done.
But then there is Old canon, and New canon. . . Nevermind.
But even in the OC (old canon) there is nothing that tells us that James Kirk was born in Iowa.
Until Star Trek, for all we knew, he could have been born in Tycho City on the Moon. Now we know that he was born on the USS Kelvin (which was probably en route to Tarsus IV in the unaltered timeline).
everything else can be explained away by the incursion of the Narada. You can kind of fudge the stardate issue if you wanted to (eg in 2386 in the Prime Universe they decided to revert to the 'old' system of stardates, which just happens to be the same as our new universe is using)
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Also, while Starfleet (actually the Federation I guess) could change to a more primitive dating system based on the birth of a religious figure from ancient Earth, I can't imagine why most Federation members would be keen on that (the Vulcans in this case!)? Even so, such a change wouldn't explain why "nuTOS" is using said primitive system. When was the dating changed in the prime universe anyway? When the Federation was established?