The Manhattanhenge is when the setting sun allignes itself with the cross streets of New York City. It happens twice a year spaced regurally around the Summer Solstice, on May 28, and either July 12, or 13.
Being the photogrophy person that I am, i think this is so cool! I wish I knew about this last week, I would have planned a trip to NYC to watch it. Oh well. there’s next year.