The day of days. Or so they call it. 

Monday, Oct. 14: Within the span of just over four hours, the Mets, Yankees and Jets will take the field. 

No, none of their seasons are literally on the line, though at least in two cases, they may as well be. 

In baseball, the Mets look to right a lopsided ship. The Yankees look to take the wheel.

The Jets look to prove to the pundits, Fireman Ed and the rest of the football-watching world that they haven’t already sunk. 

New York, welcome to Armageddon.

Mets vs. Dodgers, NLCS Game 2

First pitch: 4:08 p.m. EST

Where to watch: Fox and FS1

In the booth: Joe Davis and John Smoltz

What to know

In recent years, New York baseball fans, come October, have grown accustomed to rooting for the team in The Bronx.

This year, the magic in Queens has been indisputable. 

Over the past two weeks (two weeks!), the Mets have rallied into the playoffs, past Milwaukee and overtop Philadelphia. The Los Angeles Dodgers, though, are a different kind of beast. 

Sunday night, well, do we need to rehash Sunday night?

Tonight, Sean Manaea takes the mound in Dodgers Stadium as the Mets look to even the series one apiece. 

Follow The Post’s coverage of the Mets in the postseason:

The lefty has seen the Dodgers many a time in the past three years (Manaea spent 2023 with the Giants and 2022 with the Padres), and many a time, the Dodgers have bested him: 11 career games, 7.09 ERA. 

But nothing is the way it was in 2023. And 2022, in Mets fandom years, was an eon ago. 

The crown jewels of L.A.’s lineup shined on Sunday night — Shohei Ohtani, Mookie Betts and Freddie Freeman combined for five hits, while New York was limited to just three in an all-around lackluster performance.

If the Mets are to claw their way back into this series, it’s going to take a whole lot of Lindor and then some. 

Guardians vs. Yankees, ALCS Game 1

First pitch: 7:38 p.m. EST

Where to watch: TBS, TruTV and Max

In the booth: Brian Anderson, Ron Darling and Jeff Francoeur

What to know

The AL’s top two seeds battle it out with a World Series berth on the line. 

The last time New York and Cleveland faced off in the postseason, 1998, Bill Clinton admitted to an “improper physical relationship” and Seinfeld aired “The Finale.” 

Oh, and the team from The Bronx capped a legendary 125-victory season with a league-leading 24th title. 

What happened 26 years ago, however, is of little concern to a Yankees squad that hasn’t sniffed a pennant since 2009.

Gerrit Cole and New York ended Kansas City’s championship hopes last Thursday and had plenty of time to soak in the champagne before returning home to host tonight’s game one. 

The Guardians, in turn, arrive in New York on considerably shorter rest. Cleveland staved off elimination against the Detroit Tigers in game four of the Divisional Series before taking the deciding game five on Saturday, Oct. 12. 

Follow The Post’s coverage of the Yankees in the postseason:

Tonight, the Guardians will send Alex Cobb to the mound. For the Yankees, Carlos Rodón gets the nod. 

Bills vs. Jets

Kickoff: 8:15 p.m. EST

Where to watch: ABC, ESPN

In the booth: Joe Buck and Troy Aikman

What to know

It’s hard to believe it’s only been eight days since Gang Green’s London misadventure. 

In that span, New York fired their head coach and stripped their offensive coordinator of play-calling duties. 

And yet, with a win tonight against Josh Allen and the Bills, the Jets can take sole control of the AFC East.

That won’t come easy for Jeff Ulbrich, who is making his first appearance as interim head coach in front of a national audience on “Monday Night Football.”

Then again, the Bills are riding a two-game skid into MetLife. But, so are the Jets.

New York will at least get some help tonight when a key defensive player — no, not that one — returns to game action. C.J. Mosley, who hasn’t played since suffering a toe injury against the Titans in Week 2, will suit up, reports The Post’s Mark Cannizzaro.