title: Time shift in time format as input, the shifted real time as output
body: <p>Please, how could I:</p>
  
  <ul>
  <li>to input (not using timepicker) a time shift, for example as 02:21:22 </li>
  <li>then to display a clock with the time shift added to it.</li>
  </ul>
  
  <p>So if the time is currently 13:20:31 the displayed time would be 15:41:53 ... </p>