Tryit Editor v2.9

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<!DOCTYPE html>
<html>
<body>

<p>Click the button to display the monthname, according to UTC.</p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
function myFunction() {
    var d = new Date();
    var month = new Array(12);
    month[0] = "January";
    month[1] = "February";
    month[2] = "March";
    month[3] = "April";
    month[4] = "May";
    month[5] = "June";
    month[6] = "July";
    month[7] = "August";
    month[8] = "September";
    month[9] = "October";
    month[10] = "November";
    month[11] = "December";

    var n = month[d.getUTCMonth()];
    document.getElementById("demo").innerHTML = n;
}
</script>

<p><strong>Note:</strong> 0=January, 1=February, Etc.</p>
</body>
</html>