Knockdown Center Train Suggestion

Probably a horrible title but me and my girlfriend are going to the knockdown center on Sunday for our first LCD concert and I’m a lil concerned on when the show finished. Does anyone know when the show will actually finish? We have to take the train back to NJ and I’m concerned that if the concert ends later than 11:59 PM like it says on the website then we’ll be rushing back to Penn Station. Ofc we can always leave the concert early but I wanna avoid that.