62nd German-American Steuben Parade took place on 5th Ave from 68th Street to 86th Street, in Manhattan, NYC on the third Saturday in September. This year is September 22, 2019.
Also, there would be an Oktoberfest-style beer fest in Central Park.
The Von Steuben Day is generally considered the German-American event of the year.
Walking NYC? Walking and watching some parade is even better in New York City. There are so many parades in NYC to celebrate different things.