The date of the homo reptilian awakening depends upon the Doctor and Eldane speaking precisely. The year 3020 is never mentioned in the narration in Cold Blood. Rather, the Doctor and Eldane toss around the figure of "a thousand years", in the dialogue and Eldane's narration. Since the date of the story is explicitly 2020, then 3020 would, of course, be a thousand years from that. It seems reasonable to assume that the return of the homo reptilia would be exactly one thousand years later, as the revivification process was automated by computer.
Have a question about how 3020 relates to the rest of the DWU? See a problem here that's also happening on other pages of the wiki? Join us at our forum to have a good, ol' natter with the rest of our community. But if you want to talk about the editing of just this article, please click here and start talkin'.