The Rangers have yet to play the Penguins. The Islanders have not visited the Garden. The Blueshirts and Devils have met once, on Broadway, the second week of the season.

Such anomalies are a byproduct of the NHL scheduling matrix, adopted in 2013-14 for a three-year trial under an agreement between the league and the NHLPA, under which every team visits every other team’s home rink at least once.

Entering the All-Star break, the Rangers have played 25 home games — but only eight within the Metropolitan Division, while 10 Western Conference clubs have come to the Garden.

And, The Post has learned, the formula that largely is unsatisfying to fans in older, more traditional markets will remain in place through at least 2018-19, with deputy commissioner Bill Daly reporting via email a three-year extension of the agreement between the NHL and the players’ association.

But if the first half has been awash in interconference and interdivision matches, the stretch run will feature a far more representative number of Metro matches, both home and away.

Indeed, 15 of the club’s final 33 games — and seven of its final 16 at the Garden — will be played within the division.

So that’s something.

The Rangers, whose schedule resumes Feb. 2 at New Jersey, have six home games remaining against Atlantic Division opponents and only three against western teams. There are four road games to go against Atlantic clubs and five against teams from the west.