 The current formula has been in place since , the last year that the NFL expanded its membership.Generally, each team plays the other three teams in its own division twice, all four teams from a single division in the AFC once, all four teams from a single division in the NFC once, and two additional intraconference games based on the standings from the previous season.Since 1990, the majority of NFL regular-season games are played on Sundays at 1 pm, or around 4