NBC airs the 27th episode of the military drama The Lieutenant, created and produced by future Star Trek creator Gene Roddenberry and starring Gary Lockwood (2001: a space odyssey) and Robert Vaughn (The Man From UNCLE). Walter Koenig (Babylon 5) and Neva Patterson (V) guest star.

ABC airs the 28th episode of Leslie Stevens’ anthology series The Outer Limits. Macdonald Carey and Richard Ney star.
Using the Arecibo Radio Telescope in Puerto Rico, a team of radio astronomers led by Gordon Pettengill makes the determination that Mercury rotates on its axis once every 59 Earth days, a much shorter “day” for Mercury than the previously estimated 88 Earth day rotation. Pettengill is a pioneer of radio and radar astronomy, and will go on to use both methods to study asteroids, Venus, and Earth’s moon.
The 148th episode of Rod Serling’s The Twilight Zone airs on CBS. Jackie Cooper stars.
The 21st episode of Doctor Who airs on the BBC. This is part one of the story now collectively known as
NBC airs
The Australian Broadcasting Corporation premieres the first episode of the science fiction series The Stranger, starring Ron Haddrick.
NBC airs
Toho releases
The 27th episode of Doctor Who airs on the BBC. This is part one of the story now collectively known as