Как изменить формат даты в google chart?

google.charts.load('current', { 
  'packages': ['line', 'corechart'] 
}); 
google.charts.setOnLoadCallback(drawChart); 
 
function drawChart() { 
 
  var chartDiv = document.getElementById('chart_div'); 
 
  var data = new google.visualization.DataTable(); 
  data.addColumn('date', 'Time of Day'); 
  data.addColumn('number', "best seller"); 
  data.addColumn('number', "keyword rank"); 
 
  data.addRows([ 
    [new Date(2017, 10, 9), 1238, 750], 
    [new Date(2017, 10, 23), 1000, 630], 
    [new Date(2017, 11, 1), 980, 400], 
    [new Date(2017, 11, 28), 640, 250] 
  ]); 
 
  var options = { 
    colors: ['#000000', '#ff9000'], 
    hAxis: { 
      format: 'M/d/yy', 
      gridlines: { 
        count: 10 
      } 
    }, 
    vAxis: { 
      direction: -1 
    }, 
    width: 900, 
    height: 500, 
    series: { 
      // Gives each series an axis name that matches the Y-axis below. 
      0: { 
        axis: 'BSR' 
      }, 
      1: { 
        axis: 'KWR' 
      } 
    }, 
    axes: { 
      // Adds labels to each axis; they don't have to match the axis names. 
      y: { 
        BSR: { 
          label: 'BSR-rank' 
        }, 
        KWR: { 
          label: 'KWR-rank' 
        } 
      } 
    } 
  }; 
 
 
 
  function drawMaterialChart() { 
    var materialChart = new google.charts.Line(chartDiv); 
    materialChart.draw(data, options); 
  } 
 
  drawMaterialChart(); 
 
}

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> 
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<div id="chart_div"></div>