title: BigQuery - Datetime vs Timestamp
body: <p>I looked on the documentation for google big query data types, checking the differences between TimeStamp to Datetime data types.</p>
  
  <p>As I understand the main difference is:</p>
  
  <blockquote>
    <p>Unlike Timestamps, a DATETIME object does not refer to an absolute instance in time. Instead, it is the civil time, or the time that a user would see on a watch or calendar.</p>
  </blockquote>
  
  <p>So when should I use Timestamp/Datetime?</p>
  
  <p>Thanks</p>