By 1971, the Federal Communications Commission (FCC) introduced the Prime Time Access Rule, which freed local network affiliates in the top 50 markets (in practice, the entire network) to take a half-hour of prime time from the networks on Mondays through Saturdays and one full hour on Sundays.
Because nearly all affiliates found production costs for the FCC's intended goal of increased public affairs programming very high and the ratings (and by association, advertising revenues) low, making it mostly unprofitable, the FCC created an exception for network-authored news and public affairs shows.
After a six-month hiatus in late 1971, CBS found a prime place for 60 Minutes in a portion of that displaced time, 6:00 p.m. to 7:00 p.m. Eastern (5:00 p.m. to 6:00 p.m. Central Time) on Sundays in January 1972.

This proved somewhat less than satisfactory, however, because in order to accommodate CBS' telecasts of late afternoon National Football League (NFL) football games, 60 Minutes went on hiatus during the fall from 1972 to 1975 (and the summer of 1972).
This took place because football telecasts were protected contractually from interruptions in the wake of the infamous "Heidi Bowl" incident on NBC in November 1968.
Despite the irregular scheduling, the program's hard-hitting reports attracted a steadily growing audience, particularly during the waning days of the Vietnam War and the gripping events of the Watergate scandal; at that time, few if any other major network news shows did in-depth investigative reporting to the degree carried out by 60 Minutes.
Eventually, during the summers of 1973 through 1975, CBS did allow the program back onto the prime time schedule proper, on Fridays in 1973 and Sundays the two years thereafter, as a replacement for programs aired during the regular television season.

It was only when the FCC returned an hour to the networks on Sundays (for news or family programming), which had been taken away from them four years earlier, in a 1975 amendment to the Access Rule, that CBS finally found a viable permanent timeslot for 60 Minutes.
When the family-oriented drama Three for the Road ended after a 12-week run in the fall, the newsmagazine took its place at 7:00 p.m. Eastern Time (6:00 p.m. Central) on December 7, 1975.
It has aired at that time since for 44 years as of 2019, making it not only the longest-running prime time program currently in production, but also the television program (excluding daily programs such as evening newscasts or morning news-talk shows) broadcasting for the longest length of time at a single time period each week in U.S. television history.

This move, and the addition of then-White House correspondent Dan Rather to the reporting team, made the program into a strong ratings hit and, eventually, a general cultural phenomenon.
This was no less than a stunning reversal of the historically poor ratings performances of documentary programs on network television.
By 1976, 60 Minutes became the top-rated program on Sunday nights in the U.S. By 1979, it had achieved the #1 spot among all television programs in the Nielsen ratings, unheard of before for a news broadcast in prime time.
This success translated into great profits for CBS, advertising rates went from $17,000 per 30-second spot in 1975 to $175,000 in 1982.

The program sometimes does not start until after 7:00 p.m. Eastern, due largely to CBS' live broadcast of NFL games.
At the conclusion of an NFL game, 60 Minutes will air in its entirety and delay all subsequent programs.
However, in the two western time zones, 60 Minutes is always able to start at its scheduled time as live sports coverage ends earlier in the afternoon.
The program's success has also led CBS Sports to schedule events (such as the final round of the Masters Tournament and the second round and regional final games of the NCAA Men's Basketball Tournament) leading into 60 Minutes and the rest of the network's primetime lineup.

Starting in the 2012–2013 season, in order to accommodate a new NFL scheduling policy that the second game of a doublehead
By 1971, the Federal Communications Commission (FCC) introduced the Prime Time Access Rule, which freed local network affiliates in the top 50 markets (in practice, the entire network) to take a half-hour of prime time from the networks on Mondays through Saturdays and one full hour on Sundays. Because nearly all affiliates found production costs for the FCC's intended goal of increased public affairs programming very high and the ratings (and by association, advertising revenues) low, making it mostly unprofitable, the FCC created an exception for network-authored news and public affairs shows. After a six-month hiatus in late 1971, CBS found a prime place for 60 Minutes in a portion of that displaced time, 6:00 p.m. to 7:00 p.m. Eastern (5:00 p.m. to 6:00 p.m. Central Time) on Sundays in January 1972.
This proved somewhat less than satisfactory, however, because in order to accommodate CBS' telecasts of late afternoon National Football League (NFL) football games, 60 Minutes went on hiatus during the fall from 1972 to 1975 (and the summer of 1972). This took place because football telecasts were protected contractually from interruptions in the wake of the infamous "Heidi Bowl" incident on NBC in November 1968. Despite the irregular scheduling, the program's hard-hitting reports attracted a steadily growing audience, particularly during the waning days of the Vietnam War and the gripping events of the Watergate scandal; at that time, few if any other major network news shows did in-depth investigative reporting to the degree carried out by 60 Minutes. Eventually, during the summers of 1973 through 1975, CBS did allow the program back onto the prime time schedule proper, on Fridays in 1973 and Sundays the two years thereafter, as a replacement for programs aired during the regular television season.
It was only when the FCC returned an hour to the networks on Sundays (for news or family programming), which had been taken away from them four years earlier, in a 1975 amendment to the Access Rule, that CBS finally found a viable permanent timeslot for 60 Minutes. When the family-oriented drama Three for the Road ended after a 12-week run in the fall, the newsmagazine took its place at 7:00 p.m. Eastern Time (6:00 p.m. Central) on December 7, 1975. It has aired at that time since for 44 years as of 2019, making it not only the longest-running prime time program currently in production, but also the television program (excluding daily programs such as evening newscasts or morning news-talk shows) broadcasting for the longest length of time at a single time period each week in U.S. television history.
This move, and the addition of then-White House correspondent Dan Rather to the reporting team, made the program into a strong ratings hit and, eventually, a general cultural phenomenon. This was no less than a stunning reversal of the historically poor ratings performances of documentary programs on network television. By 1976, 60 Minutes became the top-rated program on Sunday nights in the U.S. By 1979, it had achieved the #1 spot among all television programs in the Nielsen ratings, unheard of before for a news broadcast in prime time. This success translated into great profits for CBS, advertising rates went from $17,000 per 30-second spot in 1975 to $175,000 in 1982.
The program sometimes does not start until after 7:00 p.m. Eastern, due largely to CBS' live broadcast of NFL games. At the conclusion of an NFL game, 60 Minutes will air in its entirety and delay all subsequent programs. However, in the two western time zones, 60 Minutes is always able to start at its scheduled time as live sports coverage ends earlier in the afternoon. The program's success has also led CBS Sports to schedule events (such as the final round of the Masters Tournament and the second round and regional final games of the NCAA Men's Basketball Tournament) leading into 60 Minutes and the rest of the network's primetime lineup.
Starting in the 2012–2013 season, in order to accommodate a new NFL scheduling policy that the second game of a doublehead
60 Minutes