title: Format Timezone for Carbon Date
body: <p>I'm trying to set the timezone for a date in a <code>Carbon</code> object. It works fine locally but on my production box it keeps giving me <code>Bad timezone</code> error.</p>
  
  <p>I've tried:</p>
  
  <pre><code>$date-&gt;setTimezone('7');
  $date-&gt;setTimezone('+7');
  $date-&gt;setTimezone('7:00');
  $date-&gt;setTimezone('+7:00');
  $date-&gt;setTimezone('UTC 7');
  $date-&gt;setTimezone('UTC +7');
  $date-&gt;setTimezone('UTC 7:00');
  $date-&gt;setTimezone('UTC +7:00');
  </code></pre>
  
  <p>No idea why it's complaining on my production box. Can't find documentation either on what is the "proper" format to enter here. Can someone please help.</p>
  
  <p>FYI: local is windows, and prod is Ubuntu box.</p>