Movie starts with a stock aerial footage over Liberty Island and in the background you can see NYC as movie plot takes place there. Stock footage is clearly late autumn as deciduous trees on Island don't have leaves, and everything is yellowish and greyish. But the next stock footage shows Manhattan with beautiful green trees. Several seconds later, again stock footage of Manhattan and it's autumn again as leaves on trees are mostly yellow. Finally we see Kelly on the street of Hamilton (as there was actually shot) with beautiful green tree behind. Also several minutes later, we see Joe and Forest running in Central Park (in Hamilton) and it's clearly summer, too. But again, there was later again autumn NYC stock footage.