BBC1 premieres the 28th episode of Terry Nation’s science fiction series Blake’s 7. This episode continues the story arc of the Federation’s postwar rebuilding. Michael Sheard and John Hollis (both of whom will be seen later in 1980 in The Empire Strikes Back) guest star. 
NBC airs the 14th episode of Buck Rogers In The 25th Century. Gary Coleman guest stars.
BBC1 premieres the 29th episode of Terry Nation’s science fiction series Blake’s 7. This episode focuses heavily on new series regulars Josette Simon and Steven Pacey; Michael Gough (Batman) guest stars.
The eighth episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, continuing the second series of the now-hit cult science fiction phenomenon. (Some elements of the second radio series will go on to form the basis of Adams’ novel The Restaurant At The End Of The Universe.) Valentine Dyall (Doctor Who’s Black Guardian) guest stars.
The ninth episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, continuing the second series of the now-hit cult science fiction phenomenon. (Some elements of the second radio series will go on to form the basis of Adams’ novel The Restaurant At The End Of The Universe.)
The tenth episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, continuing the second series of the now-hit cult science fiction phenomenon. At this point, the story diverges into material that will not be repeated in later iterations of Hitchhiker’s Guide; Rula Lenska and John Le Mesurier guest star.
NBC airs the 15th episode of Buck Rogers In The 25th Century. Pamela Hensley and Michael Ansara guest star.
The 11th episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, continuing the second series of the now-hit cult science fiction phenomenon. At this point, the story has diverged into material that will not be repeated in later iterations of Hitchhiker’s Guide; Rula Lenska guest stars.
The 46th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno. Louise Sorel guest stars.
This series is not yet fully chronicled in the LogBook. You could help change that.
The 12th episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, ending the second series of the now-hit cult science fiction phenomenon. The conclusion of this episode effectively ends the series, though this ending is ignored by all later Hitchhiker’s Guide media, including the 21st century revival of the radio series, which will take its cues from Adams’ post-radio-series novels. Jonathan Pryce, Rula Lenska, and Ken Campbell guest star.
BBC1 premieres the 30th episode of Terry Nation’s science fiction series Blake’s 7.
NBC airs the 16th episode of Buck Rogers In The 25th Century.
The 47th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno.
This series is not yet fully chronicled in the LogBook. You could help change that.
The second episode of a vastly retooled Battlestar Galactica (or, depending on how you look at it, the show’s 23rd episode) premieres on ABC, continuing a three-part storyline.
BBC1 premieres the 31st episode of Terry Nation’s science fiction series Blake’s 7.
NBC airs the 17th episode of Buck Rogers In The 25th Century. Timed to coincide with the 1980 Winter Olympics, the episode guest stars former Olympic athletes Thomas Henderson and Carlos Palomino.
The 48th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno.
This series is not yet fully chronicled in the LogBook. You could help change that.
The third episode of a vastly retooled Battlestar Galactica (or, depending on how you look at it, the show’s 24th episode) premieres on ABC, concluding a three-part storyline.
BBC1 premieres the 32nd episode of Terry Nation’s science fiction series Blake’s 7. Colin Baker (Doctor Who) and Valentine Dyall guest star.
NBC airs the 18th episode of Buck Rogers In The 25th Century. Mary Woronov and Anne Lockhart guest star.
The 49th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno.
This series is not yet fully chronicled in the LogBook. You could help change that.
BBC1 premieres the 33nd episode of Terry Nation’s science fiction series Blake’s 7.
NBC airs the 19th episode of Buck Rogers In The 25th Century. Jerry Orbach (Law & Order) and Richard Moll (Night Court) guest star. 
The 50th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno.
This series is not yet fully chronicled in the LogBook. You could help change that.
BBC1 premieres the 34th episode of Terry Nation’s science fiction series Blake’s 7.
The 51st episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno. Jeanette Nolan guest stars.
This series is not yet fully chronicled in the LogBook. You could help change that.
BBC1 premieres the 35th episode of Terry Nation’s science fiction series Blake’s 7. This episode, written by fantasy novelist Tanith Lee, is unique in that it features only the regular cast with no speaking guest stars.
Attempting to build a TV franchise onto the 1973 hit movie Westworld, the first episode of Beyond Westworld airs on CBS, starring Jim McMullan and James Wainwright. Cassandra Peterson (later better known as Elvira) guest stars.
BBC1 premieres the 36th episode of Terry Nation’s science fiction series Blake’s 7. This episode is written by novelist Trevor Hoyle, who has already penned two Blake’s 7 tie-in novelizations during the series’ first season.
The second episode of Beyond Westworld airs on CBS, starring Jim McMullan, Connie Sellecca, and James Wainwright. NFL players Anthony Davis and Delvin Williams guest star in a football-themed episode.