The west-side waterfront sees the flat-horizon sunset
The Sun sets in the western half of the sky. Hudson River Park runs four miles along Manhattan's west side, from Battery Park City to West 59th Street, so the waterfront there looks west across the river toward sunset; inside the street grid, buildings hide the Sun before the calculated time. The reference is Lower Manhattan, 40.71° N, 74.01° W.
Source: Hudson River Park