class="input-group-addon">
            <span class="glyphicon glyphicon-calendar"></span>
            </span>
         </div>
      </div>
   </div>
</div>
<script type="text/javascript">
   $(function () {
       $('#datetimepicker6').datetimepicker();
       $('#datetimepicker7').datetimepicker({
   useCurrent: false
   });
       $("#datetimepicker6").on("dp.change", function (e) {
           $('#datetimepicker7').data("DateTimePicker").minDate(e.date);
       });
       $("#datetimepicker7").on("dp.chan