The article mentions the author consulted with the screenwriters, so some of the dates may have come from their talks that haven't made it on screen yet (and thus could be subject to change)
That’s fair. I think it’s worth noting that the only portion the article mentioned was verified by the Hagemans was that they said the “50 years from now” figure sounded right, so the approximated 50 years from 2383 is supported.
But nothing in the interview mentions or suggests that the Hagemans weighed in on the Diviner being sent back to 2366, and that supposition seems to directly contradict the dialogue that The Diviner and Drednok exchanged in Kobayashi saying they’d already been mining for years ahead of the flashback. So for the time being I’m taking that portion with a grain of salt and assuming the Diviner and Drednok went years further back than 2366 based on what’s onscreen, until we learn otherwise.