<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<H1 id="H1"></H1>
<script>
    var day;
    var todayDate = new Date().getDay();
    switch(todayDate)
    {
        case 0:
            day="Sunday";
            break;
        case 1:
            day="Monday";
            break;
        case 2: 
            day="Tuesday";
            break;
        case 3:
            day="Wednesday";
            break;
        case 4:
            day="Thursday";
            break;
        case 5:
            day="Friday";
            break;
        case 6:
            day="Saturday";
            break;
    }
    document.getElementById("H1").innerHTML="Today is " + day;
</script>
</body>
</html>