grafana/public/app/features/dashboard/timepicker/timepicker.html

<ul class="nav gf-timepicker-nav" ng-show="!ctrl.panel.disableTimePicker">

  <li class="dashnav-move-timeframe gf-timepicker-time-control" bs-tooltip="'Shift time backward <br> (left arrow key)'" data-placement="bottom">
    <a ng-click='ctrl.move(-1)'>
      <i class="fa fa-chevron-left"></i>
    </a>
  </li>
  <li class="dashnav-zoom-out gf-timepicker-time-control" bs-tooltip="'Time range zoom out <br> CTRL+Z'" data-placement="bottom">
    <a ng-click='ctrl.zoom(2)'>Zoom Out</a>
  </li>
  </li>
  <li class="dashnav-move-timeframe gf-timepicker-time-control" bs-tooltip="'Shift time forward <br> (right arrow key)'" data-placement="bottom">
    <a ng-click='ctrl.move(1)'>
      <i class="fa fa-chevron-right"></i>
    </a>
  </li>

  <li>
    <a bs-tooltip="ctrl.tooltip" data-placement="bottom" ng-click="ctrl.openDropdown()" class="gf-timepicker-nav-btn">
      <i class="fa fa-clock-o"></i>
      <span ng-bind="ctrl.rangeString"></span>
      <span ng-show="ctrl.isUtc" class="gf-timepicker-utc">
        UTC
      </span>

      <span ng-show="ctrl.dashboard.refresh" class="text-warning">
        &nbsp; Refresh every {{ctrl.dashboard.refresh}}
      </span>
    </a>
  </li>

  <li class="dashnav-refresh-action">
    <a ng-click="ctrl.timeSrv.refreshDashboard()">
      <i class="fa fa-refresh"></i>
    </a>
  </li>

</ul>