title: Datetime local 24h format
body: <p>i want to use the the 24 hour format in my datetime picker im my view
  here the code of my view i am using the simple datetime local</p>
  
  <pre><code>&lt;input id="start_date" type="datetime-local" class="form-control&gt;
  </code></pre>
  
  <p>the result:
  <a href="https://i.stack.imgur.com/7j0Sw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7j0Sw.png" alt="here&#39;s the result"></a></p>
  
  <p>i tried this </p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
    $('#clockPicker').timepicker({
        'timeFormat':'H:i'
    });
  &lt;/script&gt;
  </code></pre>