Really interesting article here on how the schedule was developed for the NFL season:
http://mmqb.si.com/2015/04/22/nfl-schedule-release-pope/Apparently, the pope is giving an outdoor mass in Philly on the third Sunday of the season, so the local archbishop made a request to the league not to schedule a game in Philly that day. A guy named Howard Katz was responsible for scheduling those games. According to Katz:
"Yes...The pope did influence the NFL schedule. My name may be Katz, but I wasn’t taking any chances."18 TPs for Howard for having a sense of humor.
Mike