TRUE STAR TREK® TRIVIA
How did Star Trek really do in the ratings on NBC?

Which of these shows came in first, second, and third from 8:30 to 9 p.m. on Thursday night, May 8, 1967: Star Trek on NBC, Bewitched on ABC, and My Three Sons on CBS? What about from 9 to 9:30 p.m.? What show won and which lost: the last half-hour of Star Trek on NBC, or That Girl on ABC, or the Thursday Night Movie on CBS?
Answer:

Typical of the night “Shore Leave” aired on NBC, Star Trek was the network's highest rated show. It also won its time slot. A.C. Nielsen said 31.4% of the TV sets running in America were tuned to Star Trek. The estimated audience was over 11,000,000 households. ABC’s top-rated series, Bewitched, came in second, with 30.7%, and CBS trailed with 28.7% for its hit series, My Three Sons. Star Trek’s audience share increased to 32.7% at 9 p.m. as ABC aired That Girl, down to 29%, and CBS drew 23.3% for the network’s Thursday Night Movie. 45 years of folklore about Star Trek is dispelled on nearly every page of These are the Voyages - TOS: Season One.