1000 first arrives, he checks Johns record via the  computer in the police car. It lists his age as ten and his birth  date as 2/28/1985, placing the movies events after 2/28/1995.  However, when they are leaving the gas station, the Terminator tells  Sarah Connor that in three years Cyberdyne becomes the largest  supplier of military computer systems, and we learn that Skynet goes  online on 8/4/1997 (much less than three years later).