title: Material-ui timepicker format
body: <p>I am using the following time picker from Material-UI (see link below) and wanted to see whether it was possible to cater for the following format as I need to allow the user to enter 24 hour time as well as to the second:</p>
  <pre><code>&quot;HH:mm:ss&quot;
  </code></pre>
  <p>I have tried the following and it doesn't work:</p>
  <pre><code>                    &lt;TextField
                          name=&quot;time&quot;
                          label=&quot;Alarm clock&quot;
                          type=&quot;time&quot;
                          defaultValue=&quot;&quot;
                          format=&quot;HH:mm:ss&quot;
                        /&gt; 
  </code></pre>
  <p><a href="https://material-ui.com/components/pickers/#time-pickers" rel="nofollow noreferrer">https://material-ui.com/components/pickers/#time-pickers</a></p>
  <p>Please note: I am not able to use <a href="https://material-ui-pickers.dev/" rel="nofollow noreferrer">Material-UI Pickers</a> and need to use the above.</p>
  <p>Any help would be great.</p>