© 2009 Steve Kelley
The Manhattanhenge sunset in New York City (NYC) viewed from the 42nd Street Bridge near 1st Avenue. From the archives.
HDR - single RAW (photomatix 3.1)
In May of 2008, it was a clear and beautiful day, and around 8:10pm Manhattan flooded dramatically with sunlight just as the Sun set precisely on the centerline of every street for what is locally called "Manhattanhenge". Normally, the tall buildings that line the gridded streets of New York City's tallest borough hide the setting Sun.
This effect makes Manhattan a type of modern Stonehenge, although only aligned to 28.9 degrees east of north. Were Manhattan's road grid perfectly aligned to east and west, the effect would occur on the Vernal and Autumnal Equinox, March 20th and September 21st, the only two days that the Sun rises and sets due east and west.