Manhattanhenge: Difference between revisions
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Revision as of 02:10, 29 May 2024
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Manhattanhenge_2016-07-12-FRD.png/220px-Manhattanhenge_2016-07-12-FRD.png)
Manhattanhenge, also called the Manhattan Solstice,[1] is an event, including in 2024,[2] during which the setting sun or the rising sun is aligned with the east–west streets of the main street grid of Manhattan, New York City. The astrophysicist Neil deGrasse Tyson claims to have coined the term, by analogy with Stonehenge. The sunsets and sunrises each align twice a year, on dates evenly spaced around the summer solstice and winter solstice. The sunset alignments occur around May 28 and July 13. The sunrise alignments occur around December 5 and January 8.
Manhattan has a phenomenon of this kind due to its extensive urban canyons and its rectilinear street grid that is rotated 29° clockwise from true east–west.[3] Many streets align with the view of the Manhattanhenge including 14th, 23rd, 34th, 42nd, and 57th Streets.[4]
Explanation and details
The term Manhattanhenge[5] is a reference to Stonehenge, a prehistoric monument located in Wiltshire, England, which was constructed so that the rising sun, seen from the center of the monument at the time of the summer solstice, aligns with the outer "Heel Stone". The phenomenon (but not the term "Manhattanhenge") was described by Neil deGrasse Tyson,[6] an astrophysicist at the American Museum of Natural History and a native New Yorker in 1997 in the magazine Natural History.[7] In a later interview, Tyson stated that he coined the term, and that it was inspired by a childhood visit to Stonehenge on an expedition headed by Gerald Hawkins, an astronomer who was the first to propose Stonehenge's purpose as an ancient astronomical observatory used to predict movements of sun and stars, as outlined in his 1965 book Stonehenge Decoded. According to Tyson,
"I visited Stonehenge as a kid at age 15 on an expedition that [Hawkins] was the expedition head... and that stuck with me, which is why I named this phenomenon in Manhattan where the sun sets along the street grid... I named that Manhattanhenge, sort of harkening back to my early days thinking about the alignment of the sun and structures that we might build."[8]
In accordance with the Commissioners' Plan of 1811, the street grid for most of Manhattan is rotated 29° clockwise from true east-west.[3] Thus, when the azimuth for sunset is 299° (i.e., 29° north of due West), the sunset aligns with the streets on that grid. This rectilinear grid design runs from north of Houston Street in Lower Manhattan to south of 155th Street (Manhattan) in Upper Manhattan.[9] A more impressive visual spectacle, and the one commonly referred to as Manhattanhenge, occurs a couple of days after the first such date of the year, and a couple of days before the second date, when a pedestrian looking down the center line of the street westward toward New Jersey can see the full solar disk slightly above the horizon and in between the profiles of the buildings.[1] The date shifts are due to the sunset time being when the last of the sun just disappears below the horizon.
The precise dates of Manhattanhenge depend on the date of the summer solstice, which varies from year to year, but remains close to June 21. In 2014, the "full sun" Manhattanhenge occurred on May 30 at 8:18 p.m., and on July 11 at 8:24 p.m.[10] The event has attracted increasing attention in recent years.[11]
The dates on which sunrise aligns with the streets on the Manhattan grid are evenly spaced around the winter solstice and correspond approximately to December 5 and January 8.[12]
Occurrences
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Manhattanhenge2_rotated%2Bsharpened.jpg/110px-Manhattanhenge2_rotated%2Bsharpened.jpg)
![Manhattan sunset on June 3 on West 42nd Street](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Manhattanhenge_creating_beautiful_colors_on_West_42nd_Street.jpg/170px-Manhattanhenge_creating_beautiful_colors_on_West_42nd_Street.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Manhattanhenge_Workers_head_out_of_Penn_Station_into_the_sunrise_on_2020-01-21_on_W_32nd_St_IMG_7727_FRD.jpg/170px-Manhattanhenge_Workers_head_out_of_Penn_Station_into_the_sunrise_on_2020-01-21_on_W_32nd_St_IMG_7727_FRD.jpg)
In the following table, "full sun" refers to occurrences of the full solar disk just above the horizon, while "half sun" refers to occurrences of the solar disk partially hidden below the horizon.[10]
Date | Zeit | Typ |
---|---|---|
May 29, 2016 | 8:12 p.m. | Half sun[13] |
May 30, 2016 | 8:12 p.m. | Full sun |
July 11, 2016 | 8:20 p.m. | Full sun |
July 12, 2016 | 8:20 p.m. | Half sun |
May 29, 2017 | 8:13 p.m. | Half sun[14] |
May 30, 2017 | 8:12 p.m. | Full sun |
July 12, 2017 | 8:20 p.m. | Full sun |
July 13, 2017 | 8:21 p.m. | Half sun |
May 29, 2018 | 8:13 p.m. | Half sun[15] |
May 30, 2018 | 8:12 p.m. | Full sun |
July 12, 2018 | 8:20 p.m. | Full sun |
July 13, 2018 | 8:21 p.m. | Half sun |
May 29, 2019 | 8:13 p.m. | Half sun[16] |
May 30, 2019 | 8:12 p.m. | Full sun |
July 12, 2019 | 8:20 p.m. | Full sun |
July 13, 2019 | 8:21 p.m. | Half sun |
May 29, 2020 | 8:13 p.m. | Half sun[17] |
May 30, 2020 | 8:14 p.m. | Full sun |
July 11, 2020 | 8:20 p.m. | Full sun |
July 12, 2020 | 8:21 p.m. | Half sun |
May 29, 2021 | 8:13 p.m. | Half sun[18] |
May 30, 2021 | 8:12 p.m. | Full sun |
July 12, 2021 | 8:20 p.m. | Full sun |
July 13, 2021 | 8:21 p.m. | Half sun |
May 29, 2022 | 8:13 p.m. | Half sun[19] |
May 30, 2022 | 8:12 p.m. | Full sun |
July 11, 2022 | 8:20 p.m. | Full sun |
July 12, 2022 | 8:21 p.m. | Half sun |
May 29, 2023 | 8:13 p.m. | Half sun[20] |
May 30, 2023 | 8:12 p.m. | Full sun |
July 12, 2023 | 8:20 p.m. | Full sun |
July 13, 2023 | 8:21 p.m. | Half sun |
May 28, 2024 | 8:13 p.m. | Half sun[2] |
May 29, 2024 | 8:12 p.m. | Full sun |
July 12, 2024 | 8:21 p.m. | Full sun |
July 13, 2024 | 8:20 p.m. | Half sun |
Related phenomena in other cities
The same phenomenon happens in other cities with a uniform street grid and an unobstructed view of the horizon. If the streets on the grid were rigorously north-south and east–west, then both sunrise and sunset would be aligned on the days of the vernal and autumnal equinoxes (which occur around March 20 and September 23 respectively). In Baltimore, for instance, sunrise aligns on March 25 and September 18 and sunset on March 12 and September 29.[21]
In Chicago, where the street grid aligns with the cardinal directions, the setting sun lines up with the street canyons near the spring and autumn equinoxes, March 20 and September 25, a phenomenon dubbed Chicagohenge.[22]
In Toronto, the setting sun lines up with the east–west streets on February 16 and October 25, a phenomenon now known locally as Torontohenge.[23] In Montreal, there is a Montrealhenge each year around June 12.[24]
When the architects designing the city centre of Milton Keynes, in the United Kingdom, discovered that its main street almost framed the rising sun on Midsummer Day and the setting sun on Midwinter Day, they consulted Greenwich Observatory to obtain the exact angle required at their latitude, and persuaded their engineers to shift the grid of roads a few degrees.[25]
In Cambridge, Massachusetts, MIThenge occurs about January 29 and November 11, when the setting sun may be seen across the length of the "Infinite Corridor" at the Massachusetts Institute of Technology.[26][27]
In Strasbourg, the Strasbourghenge occurs in October where the rising sun seen from the A351 motorway lines up with the spire of the cathedral.
In San Francisco, the sunrise lines up and falls perfectly above the San Francisco–Bay Bridge between California and Gough Street in San Francisco, twice a year (Spring and Fall). This has been called "California Henge" at times.[28][29]
Also in San Francisco there is a “Crack of light” between two very close buildings on the Summer Solstice at 1698 Sanchez Street every year.[30] Variously over the years there has been a white or yellow line painted on the sidewalk to mark the place where the light shines through the crack on the Solstice.[31]
See also
References
- ^ a b Jenkins, Alejandro (2013). "The Sun's position in the sky". European Journal of Physics. 34 (3): 633–652. arXiv:1208.1043. Bibcode:2013EJPh...34..633J. doi:10.1088/0143-0807/34/3/633. S2CID 119282288.
- ^ a b Miller, Katrina (May 27, 2024). "Here Comes Manhattanhenge 2024: When and How to Watch - The annual event brings New Yorkers together to celebrate longer days, warmer weather and epic summer sunsets". The New York Times. Archived from the original on May 27, 2024. Retrieved May 28, 2024.
- ^ a b Petzold, Charles (July 2005). "How Far from True North are the Avenues of Manhattan?". Archived from the original on April 4, 2007. Retrieved July 9, 2017.
- ^ "Manhattanhenge 2020". rove.me.
- ^ "Sunset Manhattanhenge 2022: Picture-Perfect Sunsets are back with Manhattanhenge on New York's Grid". ViralGlobeNews. May 30, 2022. Archived from the original on May 30, 2022. Retrieved May 30, 2022.
- ^ Iezzi, Teressa (May 29, 2015). "How Neil deGrasse Tyson Discovered Manhattanhenge". Fast Company.
- ^ Mack, Stan (April 1997). "Cartoon". Natural History: 80–81.
- ^ Joe Rogan Experience #1159 - Neil deGrasse Tyson. YouTube. Joe Rogan Experience. August 22, 2018. Event occurs at 1:07:29. Archived from the original on December 14, 2021. Retrieved August 31, 2018. Video Interview.
- ^ Rao, Joe (May 19, 2018). "The Story of 'Manhattanhenge': An NYC Phenomenon Explained". space.com. Retrieved December 27, 2022.
- ^ a b Tyson, Neil deGrasse. "Manhattanhenge" on the Hayden Planetarium website
- ^ LaFrance, Adrienne (May 29, 2014). "Why Do People Love Manhattanhenge So Much?". The Atlantic. Retrieved July 14, 2014.
- ^ "Sun to strike New York streets in 'Manhattanhenge'". The Daily Telegraph. July 11, 2011.
In wintertime, the phenomenon is seen around December 5 and January 8.
- ^ Carlson, Jen (May 6, 2016). "Here Are Your 2016 Manhattanhenge Dates". Gothamist. Archived from the original on May 9, 2016. Retrieved May 12, 2016.
- ^ Carlson, Jen (May 15, 2017). "Here Are Your 2017 Manhattanhenge Dates". Gothamist. Archived from the original on May 17, 2017. Retrieved May 17, 2017.
- ^ Brito, Christopher (May 30, 2018). "Manhattanhenge 2018: How to watch New York City's spectacular sunset". www.cbsnews.com. Archived from the original on May 30, 2023. Retrieved May 30, 2023.
- ^ Brown, Nicole (July 12, 2019). "Manhattanhenge 2019: When and where to see the sunset | amNewYork". www.amny.com. Archived from the original on May 30, 2023. Retrieved May 30, 2023.
- ^ Goicochea, Julia (May 18, 2017). "Where and When To See Manhattanhenge 2020 in New York City". Culture Trip. Archived from the original on May 30, 2023. Retrieved May 30, 2023.
- ^ Carlson, Jen (May 29, 2021). "Here Are Your Manhattanhenge 2021 Dates". Gothamist. Archived from the original on May 30, 2023. Retrieved May 30, 2023.
- ^ Carlson, Jen (May 13, 2022). "Here Are Your 2022 Manhattanhenge Dates & How to Get to the Best Viewing Spots". away.mta.info. Archived from the original on May 30, 2023. Retrieved May 30, 2023.
- ^ Stirone, Shannon (May 29, 2023). "Manhattanhenge Returns for Picture-Perfect Sunsets on New York's Grid". The New York Times. ISSN 0362-4331. Archived from the original on May 29, 2023. Retrieved May 29, 2023.
- ^ Roylance, Frank (July 13, 2007). "Sunset on "Manhattanhenge"". The Baltimore Sun. Archived from the original on March 15, 2023. Retrieved March 15, 2023.
- ^ Moser, Whet (August 20, 2009). "Chicagohenge!". Chicago Reader. Retrieved September 20, 2010.
- ^ Watson, Gavan (July 7, 2009). "Experience "Manhattanhenge" in Toronto". Gavan P. L. Watson.
- ^ Kjorlien, Trevor (June 19, 2021). "Solstice Sunset and Montréal North". Plateau Astro. Retrieved April 3, 2022.
- ^ Barkham, Patrick (May 3, 2016). "The struggle for the soul of Milton Keynes". TheGuardian.com. Retrieved May 11, 2016.
- ^ Goldman, Stuart J. (November 2003). "Sun Worship in Cambridge" (PDF). Sky & Telescope. Archived from the original (PDF) on March 4, 2016. Retrieved July 17, 2014.
- ^ Olum, Ken; Foner, Lenny (2021). "MIT Infinite Corridor Astronomy - MIThenge". MIT. Retrieved August 21, 2021.
- ^ "'California Henge' stuns crowds with epic San Francisco sunrise". KTVU FOX 2. April 8, 2023. Retrieved May 30, 2023.
- ^ "What is California Henge? Here's when you can see stunning sunrise this weekend in SF". ABC7 San Francisco. April 8, 2023. Retrieved May 30, 2023.
- ^ Mauhay-Moore, Sam (June 22, 2023). "Why a crowd gathered near a crack between 2 SF buildings". SFGATE. Retrieved June 24, 2023.
- ^ "Google Maps". Google Maps. Retrieved June 24, 2023.
External links
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
Media
- Flickr photos tagged with Manhattanhenge
- Video interpretation of Manhattanhenge
- Video on Science Friday website
- Manhattanhenge, NOVA scienceNOW, first broadcast September 14, 2006