Here's what to expect for correct running times in network prime time without commercials:
1950s:
—Sitcoms: 26:00
—Dramas: 51:00 to 52:00
1960s:
—Sitcoms: 25:30
—Dramas: 50:00 to 51:00
1970s:
—Sitcoms: 24:45 to 25:30 (shows that aired at x:30 were 30 seconds shorter due to news breaks by now)
—Dramas: 49:00 to 50:00
late 1970s-early 1980s:
—Sitcoms: 24:00 to 25:00
—Dramas: 48:30 to 49:00
mid-1980s to about 1989:
—Sitcoms: 23:30 to 24:45
—Dramas: 47:30 to 48:30
c. 1989 to the mid-1990s:
—Sitcoms: 23:00
—Dramas: 46:00 to 47:00
mid-1990s to 2000:
—Sitcoms: 22:30
—Dramas: 44:00 to 45:00
today:
—Sitcoms: 21:30 to 22:00
—Dramas: 42:30 to 43:30
This is what I've looked at from any network broadcasts I have, DVDs, and looking at Hulu running times.
1950s:
—Sitcoms: 26:00
—Dramas: 51:00 to 52:00
1960s:
—Sitcoms: 25:30
—Dramas: 50:00 to 51:00
1970s:
—Sitcoms: 24:45 to 25:30 (shows that aired at x:30 were 30 seconds shorter due to news breaks by now)
—Dramas: 49:00 to 50:00
late 1970s-early 1980s:
—Sitcoms: 24:00 to 25:00
—Dramas: 48:30 to 49:00
mid-1980s to about 1989:
—Sitcoms: 23:30 to 24:45
—Dramas: 47:30 to 48:30
c. 1989 to the mid-1990s:
—Sitcoms: 23:00
—Dramas: 46:00 to 47:00
mid-1990s to 2000:
—Sitcoms: 22:30
—Dramas: 44:00 to 45:00
today:
—Sitcoms: 21:30 to 22:00
—Dramas: 42:30 to 43:30
This is what I've looked at from any network broadcasts I have, DVDs, and looking at Hulu running times.