3 ms·B knows because B had the information "16th", and "16th" is unique among the July and August dates.by detcader 12y agoB knows because B had the information "16th", and "16th" is unique among the July and August dates.cafard 12y agoQuite, but B could have easily known "15th" or "17th" for all that A knows in this particular part of the story.rwbhn 12y agoNope, A knows July from the beginning - which rules those out. We, the readers, don't know that until A's final stmt.