I've seen a recording labeled with this date on one collector's tape list; also got this note from a concerned party:
I wasn't at the show, but I was living in NYC at the time, and the next week someone told me (or perhaps I read about it in the paper) that BTS had indeed shown up the night before they were supposed to play, set up their equipment and played a set. So, this is probably the show on that person's bootleg list. It was definitely not something that would have been on their tour schedule.