Weekend of the 17th.
Philly might be too far
, but from what i can see, manhattan might be doable.
While the flight has a 6 hour layover, we don't actually have 6 hours to kill. We have to pass through customs in JFK, and they recommend 2 hours for that. So, really, we only have 3-4 hours to kill, which has to include any travel time.