More than four months away from the start of the season, the NFL will release the entire 2015 schedule on Tuesday night. At 8 p.m. ET, all 32 teams will know who they’ll be playing and when they’ll be playing them between Weeks 1 and 17.

It’s no secret what teams will face each other in 2015. Every team’s opponents were determined at the end of the 2014 regular season. But the NFL is finally set to announce matchups on key days, such as the Thursday of "NFL Kickoff Weekend," the "Monday Night Football" schedule and the Thanksgiving matchups. The New England Patriots will open the season on Thursday, Sept. 10, with 13 possible opponents. The Dallas Cowboys and Detroit Lions are a given to be on the Thanksgiving schedule.

Multiple TV channels will cover the release of the schedule. NFL Network will cover the event from 8-10 p.m. ET with “NFL Total Access: Schedule Releases ’15.” ESPN will air a two-hour special, as well, going from 8-9 p.m. ET on ESPN, followed by coverage on ESPN2 from 9-10 p.m. ET. Live streams will be available with both and WatchESPN.

While an entire 17-week schedule will be announced, not every game is set in stone. The league’s flexible schedule allows the NFL to change the kickoff time of select Sunday contests, putting the most important ones in primetime.

Last year, four men worked at NFL headquarters for more than two months to come up with a schedule for all 32 teams. With each team’s opponents for the regular season already set, there are approximately 500,000 different possibilities.