I had always wondered about this because when I first saw the show it WAS at 8pm and then I saw it again at 7 but for the life of me can't remember the lyric change. I do remember whatever it was, the changed line was still followed by "It's not too late".
I saw a 3pm matinee last year after being familiar with the recording, and I distinctly remember that the lyric had been changed to "it's only just past 3, still time to flee" or something of that nature.