Every year, about three weeks on either side of the summer solstice, the setting sun lines up with the grid of New York City's numbered streets. American Museum of Natural History astrophysicist Neil deGrasse Tyson popularized the term "Manhattanhenge" to describe the event, and it has enjoyed a surge of popularity in recent years. This year Manhattanhenge occurred on May 30 and July 11. These are four images from St. Mark's Place in the East Village.