So, I'm doing a major re-watch of the entire Star Trek universe in chronological order: all episodes of every series (including The Animated Series) and all the films. I've just finished Star Trek IV - The Voyage Home, and had a question about the placement of Star Trek II - The Wrath of Khan, Star Trek III - The Search for Spock, and Star Trek IV - The Voyage Home. The official chronology placed STII and STIII in 2285, and STIV in 2286... but this makes little sense. First, Star Trek II - The Wrath of Khan establishes its been 15 years since the episode Space Seed, which is definitively set in 2267. Normally one would assume STII-TWoK must occur in 2282, however McCoy gives Kirk a bottle of Romulan Ale, vintage 2283 for his birthday (which occurs on March 22). This means it must be at least 2283. Also, Kirk seems to not like the taste of the ale (he makes a face as if he's forcing it down). This makes me think Romulan Ale is best after its aged, and newer vintages can be unpalatable for humans. Also, if we presume Space Seed occurs in the middle or towards end of 2267, STII's setting of March, 2283 is 15 years and change later, which gives validity to the scripted mentions of "15 years" passing between the episode and film. Further, STIII-TSfS picks up almost immediately after STII, maybe a few weeks at most to allow for some minor repairs to the Enterprise (after the notable damage received in the space battle with Khan over the nebula) and enough time for David Marcus and Saavik to be assigned/join the science team investigating the Genesis Planet. Presumably that'd place STIII in April, 2283. Star Trek IV - The Voyage Home is said to occur 3 months after STIII, so presumably in July, 2283, not 2286. Maybe I'm wrong, but considering the official chronology has it occurring 18 years after Space Seed that doesn't really jive with the 15 years mentions in STII, and even if we presume they're rounding they'd likely be more apt to round up to 20 years instead of rounding down by 3 years to come to 15 years instead of 18. Any thoughts on this? Am I overthinking it or overlooking something? Just wondering.