title: How to get all USA timezone IDs using nodatime
body: <p>How to get all USA timezone IDs using nodatime?</p>
  
  <p><a href="https://nodatime.org/TimeZones" rel="nofollow noreferrer">https://nodatime.org/TimeZones</a>
  <br/>
  Above page lists all timezone ids in nodatime,<br/><br/>
  is there any API to get all USA timezone IDs?</p>