The Nyack Halloween Parade Returns!  Saturday, Oct. 29 at 5:00 PM.  (Rain Date: October 30).  Celebrating its 33rd year!  Don't miss this exciting event, nationally ranked by the Travel Channel!   Wear your costume and join us for a "frighteningly family-fun event!"  Costume and float contest!  Register online.   Sponsored by the Nyack Chamber of Commerce. For…