title: google line-chart api for haxis for date
body: <p>I am having a list of data update daily based. </p>
  
  <pre><code>data.addColumn('date', 'Date');
      data.addColumn('number', 'Calorie');
      data.addRows([
        [new Date(2012,7,1),  400],
        [new Date(2012,7,2),  460],
  </code></pre>
  
  <p>the date will increase for 3 months is there any way for me to display only 1st day of the month in the haxis.</p>
  
  <pre><code>                        hAxis: {
                          gridlines:{count:3, color: 'white'},
                          minValue: new Date(2012, 1, 31),
                          maxValue: new Date(2012, 9, 30),
                          showTextEvery:30,
              format:'d-MMM',
                      },
  </code></pre>
  
  <p>that is my current haxis api code. it somehow display only 1-Aug.</p>