title: Invalid time zone specified: US/Alaska, US/Arizona, US/Mountain, US/Central etc error in Chrome but working in Mozilla
body: <p>I am trying to convert timestamp in to various time zone's local time and found certain TimeZone are not supporting in Chrome (v76.0.38) but working fine in Mozilla (v68.0.2).</p>
  <pre><code>  let d = new Date(1567083463);
    let n = d.toLocaleString('en-GB', { timeZone: &quot;US/Arizona&quot; });
    
  </code></pre>
  <blockquote>
  <p>Uncaught RangeError: Invalid time zone specified: US/Arizona</p>
  <p>at Date.toLocaleString ()</p>
  </blockquote>
  <p>Several other timezones are also throwing the same error</p>
  <p><code>US/Alaska</code>
  <code>US/Mountain</code>
  <code>US/Central</code>
  <code>US/East-Indiana</code></p>
  <p>These timezones are officially supported as mentioned in their website
  <a href="https://cloud.google.com/dataprep/docs/html/Supported-Time-Zone-Values_66194188" rel="noreferrer">Chrome Supported Time Zone Values</a></p>