Manhattan Sunset Alignment

APOD: 2006 July 12 – A Manhattan Sunset
Just like every May 28th and July 12th, the setting rays of the sun will align perfectly with the grid of streets in Manhattan in New York City today, clear weather permitting.
If the streets in NYC were perfectly aligned east-west, this phenomenon would occur on the equinoxes.And any city that has a grid on the Manhattan pattern is going to have two days of the year where the street grid turns into a modern day Stonehenge.