The national syndication window opens for the two-hour premiere of Star Trek: The Next Generation, Encounter At Farpoint. Written by Trek creator Gene Roddenberry and original series story editor D.C. Fontana, this episode introduces the fan favorite nemesis Q, as played by John de Lancie. Though it’s not tied to any network, some of the stations carrying TNG in syndication – including major-market stations – air TNG in prime-time in place of their usual network programming. 
The week-long national syndication window opens for the second episode of Star Trek: The Next Generation. This episode becomes an immediate lightning rod of criticism since it almost duplicates a popular episode of the original Star Trek (and even points this out in the course of its story). Data also shows Lt. Yar that he is fully functional.
The week-long national syndication window opens for the third episode of Star Trek: The Next Generation. This is the only episode of any of the Star Trek spinoffs whose soundtrack was composed by a veteran of the original series’ music department (in this case, composer Fred Steiner).
The week-long national syndication window opens for the fourth episode of Star Trek: The Next Generation. This is the first episode featuring a new alien race devised by Gene Roddenberry, the scheming, money-hungry Ferengi.
The week-long national syndication window opens for the fifth episode of Star Trek: The Next Generation, Where No One Has Gone Before. This is the first episode featuring the Traveler, as well as Wesley Crusher’s ascension to acting ensign.
The week-long national syndication window opens for the sixth episode of Star Trek: The Next Generation. This is the first episode after Encounter At Farpoint to feature future Star Trek: Deep Space Nine regular Colm Meaney as a yet-to-be-named crewman.
The week-long national syndication window opens for the seventh episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the eighth episode of Star Trek: The Next Generation. This is the second Ferengi episode, and the first episode to delve into Captain Picard’s previous command, the U.S.S. Stargazer.
The week-long national syndication window opens for the ninth episode of Star Trek: The Next Generation. This is the second appearance of Q, and the first TNG glimpse of a female Klingon.
The week-long national syndication window opens for the tenth episode of Star Trek: The Next Generation. Majel Barrett Roddenberry, who played the recurring role of Nurse Chapel in the original Star Trek, makes the first of many appearances as Lwaxana Troi. This is actually one of the earliest episodes filmed.
The week-long national syndication window opens for the 11th episode of Star Trek: The Next Generation. This episode, the first to take place almost entirely within the holodeck aboard the Enterprise, goes on to win a Peabody Award.
The week-long national syndication window opens for the 12th episode of Star Trek: The Next Generation. This episode introduces Data’s “brother” Lore, also played by Brent Spiner, and establishes an origin story for both.
The week-long national syndication window opens for the 13th episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the 14th episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the 15th episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the 16th episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the 17th episode of Star Trek: The Next Generation.
The week-long national syndication window opens for the 18th episode of Star Trek: The Next Generation. In an rare example of what passes for a “story arc” in early TNG, the characters of Admiral Quinn and the disagreeable Commander Remmick make their first of two first-season appearances.
The week-long national syndication window opens for the 19th episode of Star Trek: The Next Generation. This is the first episode of the series to focus on the Klingon race – a holdover from the original series and movies that series creator Gene Roddenberry had planned to avoid revisiting until co-producer (and fellow classic Trek producer) Bob Justman convinced him otherwise during pre-production, leading to the very late creation of a “Klingon Marine” named Worf.
The week-long national syndication window opens for the 20th episode of Star Trek: The Next Generation. This is the second of three occasions in the series in which the Enterprise’s saucer section is separated from the rest of the ship.
The week-long national syndication window opens for the 21st episode of Star Trek: The Next Generation. Merritt Butrick (Star Trek II & III) and Judson Scott (The Phoenix) guest star.
The week-long national syndication window opens for the 22nd episode of Star Trek: The Next Generation. This marks the final appearance of Denise Crosby as series regular Lt. Tasha Yar; the actress has decided to move on to less limited roles. Crosby returns to TNG several times, and later hosts several documentaries on the Star Trek phenomenon.
The week-long national syndication window opens for the 24th episode of Star Trek: The Next Generation. This is the goriest episode of the series’ entire run; even improved make-up effects in later seasons never quite match up to this story’s exploding head and torso (graphic visuals which any network with creative input or oversight would likely have nixed). Despite ending on an obvious cliffhanger, this story is never revisited by any later episodes or spinoff series.
The week-long national syndication window opens for the 25th episode of Star Trek: The Next Generation. This episode marks the end of the first season (with no guarantee, due the 1988 Writers’ Guild strike, that the series will be back in production anytime soon), and the return of the Romulans to the Star Trek universe, a sign that Gene Roddenberry is relaxing his stance on revisiting elements of the original series.