title: Django automatically converting datetime string to local timezone
body: <p>I am adding timestamp in my payload and storing it in the database for every record.</p>
  
  <p>Suppose say a part of my payload is <code>{"content":[{"timestamp":"2017-12-12 08:05:30"}]</code></p>
  
  <p>This is how I process it.</p>
  
  <pre><code>content['timestamp'] = parser.parse(content['timestamp'],dayfirst=True)
  </code></pre>
  
  <p>My model has timestamp field as :</p>
  
  <pre><code>timestamp = models.DateTimeField(null=True)
  </code></pre>
  
  <p>When I check in my database it stores timestamp field as :</p>
  
  <pre><code>2017-12-12 13:35:30
  </code></pre>
  
  <p>Which should be stored as it is as per my requirement. <code>2017-12-12 08:05:30</code></p>
  
  <p>i.e it stores the timestamp field + my local timezone(+5:30) hours.</p>
  
  <p>I want it to store the timestamp field as it is.</p>
  
  <p>I tried other posts where they suggest using <code>del os.environ['TZ']</code>.</p>
  
  <p>Any idea what I may have done which causes this or what could I do to avoid this.</p>
  
  <p>Any help is appreciated. </p>