title: How I can get BCL format of timezone by passing it TZ format
body: <p>we are using Nodatime assembly for conversion time to specified time zones. but I am using JavaScript to get users time zone using following code <code>Intl.DateTimeFormat().resolvedOptions().timeZone</code>
  but it returns me tz format of timezone but I want timezone name in BCL format to pass it to database.
  is there any way to get bcl timezone name by passing tz timezone name? </p>