How so? It takes place approximately 11 years later, in 1995. John's birthday is listed on the police computer as 2-28-85, and Silberman saying Sarah is 29 means she was 18 in the first film. John says she was arrested for "trying to blow up a computer factory", presumably the one Reese died in. The only mismatch concerns the Terminator rounding numbers, like placing 2029 as "35 years from now" and implying Judgment Day is "within three years" from T2's present. But those can easily be overlooked by Cameron forgetting to set the events another year ahead, accounting for Sarah's pregnancy.