Do you mind letting me know which games will be national? I live in Seattle so I don't know how it works and I try to avoid going to the bar to watch games because obnoxious fans annoy me.
go to this link.
http://506sports.com/nfl/
obviously the Thursday, Sunday, Monday night games are national.
Look at each Sunday's games, the late game in the afternoon. The one in bold is considered the Sunday daytime nationally televised game.
Of course these can change toward playoff time.
Also NFL TV rules may change a few in certain home teams areas.
Like a national game will not be seen if your home team in the city you live in, plays at the same time. Or conflicts with some schedule as if the home team plays at home or away.
Example, this week Jaguars and Raiders play at the same time in their home area, so they will not get the Cowboys / Eagles game.