prime time

US /ˈpraɪm taɪm/
UK /ˈpraɪm taɪm/
"prime time" picture
1.

the time at which a television or radio audience is expected to be largest, usually considered to be the hours between 8 and 11 p.m.

:
The new show will air during prime time.
Advertisers pay more for slots during prime time.
2.

the period in a person's life when they are most active, productive, or successful

:
She's still in her prime time as an athlete.
Many artists produce their best work in their prime time.