Flexible-scheduling
For more details on this topic, see NFL_on_television#Flexible-scheduling.The was the first season that the NFL used a "flexible-scheduling" for the last few weeks of the season, allowing the league flexibility in selecting games to air on Sunday night, in order to feature the current hottest, streaking teams. This was implemented to prevent games featuring losing teams from airing during primetime late in the season, while at the same time allowing NBC to rake in more money off of the higher ratings from surprise, playoff-potential teams that more fans would enjoy watching.
Under the flexible-scheduling system, all Sunday games in the affected weeks tentatively had the start times of 1 p.m. ET/10 a.m. PT, except those played in the Pacific or Mountain time zones, which will have a tentative start time of 4 p.m. ET/1 p.m. PT (or 4:15 p.m. ET/1:15 p.m. PT if it is a doubleheader weekend). On the Tuesday 12 days before the games, the league moved one game to the primetime slot, and possibly one or more 1 p.m. slotted games to the 4 p.m. slots. During the last week of the season, the league could re-schedule games as late as six days before the contests so that all of the television networks will be able to broadcast a game that has playoff implications.
Read more about this topic: 2006 National Football League Season