How to separate the dates in area chart of google charts - charts

Question

I'm using google charts and in partivular I have an area chart with many monthly data. However, as you can see in the image below, the dates on x-axis are too much close and is not possible to read them. How can i separate the dates in order to show them? Many thanks!
and this is my code:
<script type='text/javascript' src='https://www.gstatic.com/charts/loader.js'></script>;
<script type='text/javascript'>;
google.charts.load('current', {'packages':['corechart']});;
google.charts.setOnLoadCallback(drawChart2);;
function drawChart2() {;
var data = google.visualization.arrayToDataTable([;
['Time', 'Retorno'],;
for ($x = 0; $x <= count($date_array_all)-1; $x++) {
['" . $date_array_all[$x] . "', " . $equity_array_all[$x] . "], ;
}
]);;
var options = {;
chartArea: {left: 70, right:50, top: 30, bottom: 50},;
series: {;
0: { color: '#469DE4' },},;
legend: 'none',;
vAxis: {textStyle:{color: '#7F7F7F'}, baselineColor: '#CCCCCC', format: '#%', gridlines: {color: 'transparent'}},;
fontName: 'Source Sans Pro',;
hAxis: {textStyle:{color: '#7F7F7F'}}};;
var chart = new google.visualization.AreaChart(document.getElementById('chart_div2'));;
var formatter = new google.visualization.NumberFormat({pattern:'#,###%'});;
formatter.format(data, 1);;
chart.draw(data, options);;
};
</script>;
<div id='chart_div2' style='height: 450px;'></div>;

Answer 1

try increasing the bottom of the chart area...
chartArea: {left: 70, right:50, top: 30, bottom: 72} // <-- increase bottom here
with a discrete axis (string values on the x-axis), you also have the following options...
hAxis.minTextSpacing - Minimum horizontal spacing, in pixels, allowed between two adjacent text labels.
hAxis.showTextEvery - How many horizontal axis labels to show, where 1 means show every label, 2 means show every other label, and so on.
more control is allowed with a continuous axis (actual date objects on the x-axis)
in this case, you could build an array (hAxis.ticks) with the exact values