Wrong Date Listed on Die Hard

Rating: 6/10 (25 October 2008)

You've put the wrong Release Date. This movie was released in early 1986. I saw the trailer on a TV in a Chicago hotel on Sunday, February 2, 1986 the same day as the Pro Bowl and the NBA All-Star game that year.
Often the videos of the originals go through different versions, depending on what additional content or modifications are needed (director's cuts, cleaned-up language-versions, etc .). The Release Date you have is probably from a later video revision/version.
Or, it could have been from an HBO or Showtime rendition.
The broadcast debut was on FOX in early 1991.