Manhattanhenge: When the Sun Aligns with the Grid

Manhattanhenge, also known as the Manhattan Solstice, is a phenomenon where the setting sun aligns precisely with the east-west streets of the main street grid of Manhattan in New York City. It’s a visual spectacle that draws crowds of onlookers who gather to witness and photograph the sun framed perfectly between the towering buildings.

The term “Manhattanhenge” was coined by astrophysicist Neil deGrasse Tyson, director of the Hayden Planetarium at the American Museum of Natural History. He drew inspiration from Stonehenge, the prehistoric monument in England where the sun aligns with the stones on the solstices.

Unlike the solstices which occur on specific dates, Manhattanhenge happens roughly twice a year, around late May and mid-July. The exact dates shift slightly each year. These dates are determined by Manhattan’s grid being offset 29 degrees east from true north-south. This offset is what allows the sun to align with the streets just before and after the summer solstice.

There are generally two types of Manhattanhenge views: “full sun” and “half sun.” During a “full sun” Manhattanhenge, the entire solar disc is visible sitting on the horizon. During “half sun,” only the top half of the sun is visible above the horizon. Both offer stunning photographic opportunities.

Prime viewing locations for Manhattanhenge are east-west streets that offer unobstructed views across the island, particularly those with a clear line of sight to New Jersey. Popular spots include 14th, 23rd, 34th, 42nd, and 57th Streets. Wider streets and those near the East River or Hudson River generally offer the best views.

Beyond the visual spectacle, Manhattanhenge highlights the intersection of urban planning and celestial mechanics. It’s a reminder that even in the most densely populated and human-engineered environments, the rhythms of the natural world still hold sway. The event creates a shared experience, bringing together locals and tourists alike to marvel at a natural wonder playing out against the backdrop of a modern metropolis.

To find the exact dates and times of Manhattanhenge each year, it’s best to consult resources from the Hayden Planetarium or reputable astronomy websites. Timing is crucial, as the window of opportunity for optimal viewing is relatively short. Arriving early to secure a good viewing spot is also highly recommended, as the event attracts significant crowds.

Manhattanhenge is a unique and captivating event that showcases the beauty of nature intertwined with the concrete jungle. It is a must-see for anyone visiting or living in New York City during its occurrence.