>> Congress defined the borders of Colorado as a geospherical rectangle, stretching from 37°N to 41°N latitude, and from 25°W to 32°W longitude. I was confused

>> Congress defined the borders of Colorado as a geospherical rectangle, stretching from 37°N to 41°N latitude, and from 25°W to 32°W longitude. I was confused by these longitudes (which a quick check puts the state somewhere over the Atlantic), but these are using the Washington Meridian. The correct longitude boundaries in usual coordinates are 102°03'W and 109°03'W. https://en.wikipedia.org/wiki/Washington_meridians https://en.wikipedia.org/wiki/Washington_meridians