Manhattanhenge - Wikipedia, the free encyclopedia - http://en.wikipedia.org/wiki...
"Manhattanhenge – sometimes referred to as the Manhattan Solstice – is a circumstance which occurs twice a year, during which the setting sun aligns with the east–west streets of the main street grid in the borough of Manhattan in New York City. The neologism is derived from Stonehenge, where the sun aligns with the stones on the solstices with a similarly dramatic effect." - Tudor Bosman