Pay cable channel Showtime airs the 108th episode of Stargate SG-1. Corin Nemec (Parker Lewis Can’t Lose), Carmen Argenziano, and Mel Harris (thirtysomething) guest star.
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Stargate SG-1 now streaming on Amazon Prime
Pay cable channel Showtime premieres the tenth episode of J. Michael Straczynski’s post-apocalyptic series Jeremiah. Cobie Smulders (How I Met Your Mother) guest stars. 
The 20th episode of the radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is broadcast on BBC Radio, continuing Dirk Maggs’ adaptation of Douglas Adams’ novel So Long, And Thanks For All The Fish. Hitchhiker’s Guide TV regulars David Dixon and Sandra Dickinson make their first appearances in the radio series.
ABC airs the 45th episode of the J.J. Abrams-produced series Lost.
ABC premieres the 21st episode of Shaun Cassidy’s sci-fi/horror series Invasion, starring William Fichtner (Contact), Eddie Cibrian, and Lisa Sheridan. James Frain (Tron Legacy, Star Trek: Discovery) guest stars.
The 746th episode of Doctor Who (the 48th since the series’ revival) airs on BBC1. Guest star Georgia Moffett really is the Doctor’s daughter (namely, the daughter of former series star Peter Davison).
The 44th episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin, airs on the CW. Jason Mewes (Clerks) guest stars in an episode directed by Kevin Smith.
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Douglas Netter, the executive producer of the science fiction series Babylon 5 and its various spinoffs after the series’ run, from Crusade through the 2007 direct-to-DVD project Babylon 5: The Lost Tales, dies at the age of 96. A former executive vice president of MGM in the early 1970s, Netter also produced such TV projects as The Sacketts, Five Mile Creek, Hypernauts, and Captain Power, the series which introduced him to future Babylon 5 creator J. Michael Straczynski.
The 113th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
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The 137th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
This series is not yet chronicled in the LogBook. You could join theLogBook team and write this guide or support the webmaster’s efforts to expand the site.
The CW airs the 19th episode of Batwoman, starring Ruby Rose and Rachel Skarsten. Alex Zahara (Babylon 5: Legend Of The Rangers, Jeremiah) guest stars.
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Batwoman now streaming on HBO Max
The 891st episode of Doctor Who airs on BBC1 (the 192nd episode since the series’ revival), starring Ncuti Gatwa and Varada Sethu. Jo Martin guest stars.
This entry is forthcoming.