> American Catholics aren't really a monolith on this matter

No, but as a general rule, Catholics don’t and have never fretted about the end times the way all sorts of Protestant sects have, historically. Which is curious given Matthew 24:36 and all the hullabaloo Protestants make about being “scriptural”. And perhaps more importantly, because it has authority on such matters, Church teaching makes no claims about when the end of the world will occur and it never has, because it cannot.