Prime time
Appearance
Prime time refers to the block of programming on television between 8:00PM and 11:00PM. Sometimes the hour between 7:00PM and 8:00PM is also considered prime time, especially on Sunday.
Prime time is the block of time with the most viewers and is generally where television networks and local stations spend most of their programming budgets and reap much of their advertising revenues.
Other blocks of programming include the evening news, daytime soap operas, and overnight.