Hober Mallow wrote:
I'm not even convinced that TOS took place in the 23rd Century.
TMP retcon notwithstanding.
Thanks to the Great Bird of the Galaxy we have stardates instead of traditional calendar dates to refer to.
Nice "class of 78" speculations presented here, maybe there had been a class in 2178 that became famous because it had the best of the best students and eventually became a colloquialism for the best classes in Starfleet in the subsequent years.
Thus Data wasn't providing information regarding the actual year but only that he had been privileged to be in the best class, the "Class of 78"