title: X/Y Coordinates to Longitude/Latitude, package for .net core app
body: <p>I have a task to convert some incoming geo data to Longitude/Latitude.  The data elements in the json are identified as xCoordinate and yCoordinate.</p>
  
  <p>However, the data in my sample does not look like any geographic x/y coordinate data I've looked at online, so I have a couple questions that I could use expert help on, please forgive the lack of knowledge regarding this data, I've never worked with geo data prior.</p>
  
  <p>An example from my sample dataset:</p>
  
  <ul>
  <li>xCoordinate: 0981829</li>
  <li>yCoordinate: 0197525</li>
  </ul>
  
  <p>Couple questions:</p>
  
  <ul>
  <li>Do these look like valid X/Y coordinates?  Online examples seem to be in decimal format.</li>
  <li>I need a package to import into a .net core application which converts X/Y data to Longitude/Latitude, any suggestions would be appreciated.</li>
  </ul>
  
  <p>Thanks in advance for any help.</p>