What is the principle of the beauty of "Manhattan Hanger" in new york, USA?

Manhattan Hahnge refers to a natural phenomenon that occurs every year in Manhattan, new york, USA. Because Manhattan's streets are mostly checkerboard layout, in every? On May 28th and July 12 (or 13), everything in Manhattan will be covered with sunshine at sunset, presenting a spectacular scene of 15 minutes. Every year on February 5th, 65438+ and1October 8th, 65438+ will have such a landscape with the sunrise. There are two styles of street layout in Manhattan. The downtown area where Wall Street is located is like a small town in Europe. The direction of the street is a bit chaotic, and the inclined street that often jumps out makes it difficult for newcomers to grasp the direction. Manhattan presents a nearly strict checkerboard street layout from midtown to the sky. The east-west direction is called Street, numbered from south to north, and from 1 Street to 220th Street. The north-south direction is called Avenue, numbered from east to west, from First Avenue to Twelfth Avenue, and there are also a few unnamed avenues, such as Madison Avenue. Long before European immigrants set foot on Manhattan Island, it was like the eastern part of the United States. The same is true in other parts of the Ministry, for the lush trees? Grass covered and mixed with some shrubs. Early immigrants built towns with navigation and military considerations in mind. At the estuary at the southern end of the island. With the development of economy, in order to cope with the pressure of urban expansion? In particular, in order to facilitate land sales, the New York State Assembly held a meeting in 18 1 1? A plan proposed by a three-member committee was adopted, and the undeveloped area of Manhattan Island was divided into chessboards. In this plan, the vertical and horizontal streets are perpendicular to each other. Which direction along the island is basically the same as the west coast of the island? What do you usually call it? South? Where to? The direction perpendicular to it is called. East-west? . So, the east-west street on Manhattan Island actually has an angle of 28.9 degrees with the actual east-west direction, or latitude direction, which is biased to the southeast? West? Direction. In the urban environment of Manhattan, the sunshine almost fills the streets. It's possible. So, on a special day? The sunlight crossed the island along the street and became? A kind? Wondering? It's really rare for the New Yorker. In fact, in a? Among them, except for 65438+February 5, the sunrise of 65438+1October 8 is also the same as that of Dongxi Street. . The midpoint of the above two days happens to be the solstice in winter. On May 28th and July 12, the afterglow of sunset will run through the east-west streets of Manhattan, and the midpoint of these two days happens to be the summer solstice. As far as the northern hemisphere where New York is located is concerned, the rising direction of the sun is due east only at the vernal equinox and the autumnal equinox, and it deviates the most from the solstice in summer? , the southernmost point of winter solstice, and? Cycle back and forth between these two directions. So for any street, as long as its direction lies between the sunrise angle of the local summer solstice and the winter solstice, what is it? There must be two chances for the sun to rise in front of the street 2. Obviously, the sunset is similar, but it is just a mirror image.