perhaps FROG is looking for ways in which the "original" TV usage has been transferred, in which case I would recommend a google or three.

e.g.; The Grand Central Racquet Club+charges the highest fee I know of for renting either of its two courts—forty-five dollars an hour in prime time. - New Yorker

but prime-time is more interesting than it would appear at first blush--our usage is actually a renewal of a term whose obsolete senses include 1) springtime or spring and 2) the early age of the world.

"It befel in the primetime of the worlde." -Golding, De Mornay

(adjectival usages are left as an exercize for the student :)