answer: #Person1# and #Person2# will come back to the library the day after tomorrow.
documents: #Person1#: Well, this must be the National Library.
  #Person2#: I guess so. Oh, no! I don't think it's open today. Look, it says 'Closed Tuesdays'.
  #Person1#: Well, we'll just have to come back tomorrow.
  #Person2#: But we're supposed to go on that tour tomorrow.
  #Person1#: Oh, that's right. I forgot all about it. How about the day after tomorrow then?
  #Person2#: It's Ok with me.