A work that took place in the future when it was written that now takes place in the past.
Needs More Examples, May need a better title. Previously titled "The Distant Future: The Year 2000." Work in Progress notes: Many examples that can be used for this trope are already used in the examples pages of Zeerust and I Want My Jetpack largely due to the fact that these works can be conclusively verified as featuring one or both.
Cpt. Webb: Log entry: March 16th, 1980...
Crow: Oh, our old future.The future is now… or yesterday… or twenty years ago, at least according to some older works of speculative fiction. Whether or not the work is a futurist prediction of what is to come, or the author just wants to play with future tropes, the fact remains the same; works that were written as taking place in the future at the time of their writing are now placed in the past or the present. Some premises could still be plausible with a few changes if they were set a little further in the future. Others, either from science, technology, or our sense of taste marching on, don’t hold up so well. At any rate, the time that the piece of speculative fiction took place in is no longer up for speculation. The ways in which the story’s speculations contrast with what actually happened may result in hilarity in hindsight. This trope only applies to works that describe a world that feasibly (but not necessarily that feasibly) could have happened according to the knowledge available to the writer at the time of the writing. For instance, a future where civilization is destroyed by a dragon invasion is not this trope, because it is obviously fantastical in nature. Also excluded are works that we now know are infeasible or ridiculous, but still take place in a time that hasn’t happened yet. Because of this, this trope usually applies to stories that take place Twenty Minutes into the Future or Next Sunday A.D. (though stories that take place in the future-proper are obviously slated to join the ranks of this trope at some point). Also see Zeerust and I Want My Jetpack, as any work featuring this trope is very likely to have a lot of either or both of these. Compare Zeerust Canon, for when a series or franchise continues to run even after this trope has taken its toll.
-- Mystery Science Theater 3000, "The Phantom Planet"