If that sounds familiar, it should, because for decades the Lions and Cowboys have always hosted N.F.L. games on Thanksgiving. The Cowboys have played a home game on that day all but two years since 1966, and the Lions’ streak goes back uninterrupted to 1945.

Thanksgiving is Thursday, which means it's time to give thanks, feast on some turkey and watch football with the family. Traditionally, the Detroit Lions and Dallas Cowboys host games every Thanksgiving.

For the NFL on Thanksgiving, we'll have to fast forward a little bit. The NFL was born in the 1920s, but a famous tradition wasn't born until the league's teenage years. Here's everything you need to know about the NFL's Thanksgiving traditions,