title: How to change the time zone in the model without touching the main time zone of the framework?
body: <p>How can be changed timezone on <code>created_at</code> field of <code>User</code> model? For example now app timezone is <code>UTC</code> and I must change timezone <code>created_at</code> field to <code>Europe/Paris</code> and updated_at field timezone to <code>Europe/London</code> before save data to database. I have sample code to change field timezone. But I don't know where use it on model. My sample code to change timezone:</p>
  
  <pre><code>$this-&gt;created_at-&gt;timezone('Europe/London')-&gt;format('d:H:i');
  $this-&gt;updated_at-&gt;timezone('Europe/Paris')-&gt;format('H:i');
  </code></pre>