A Calendar Utility you probably don't need.
We have it anyway.
It's as simple as this :
<div id="calendar"></div>
    
<script type="text/javascript" src="calit-min.js"></script>
Its simple.
Just Create An Element
<div id="element"></div>
Add this to the body tag :
<body onload="setcal('element')"></div>
Download the Utility And Include it as a script :
get_app   Download
Or just include it from the web :
<script type="text/javascript" src="https://raw.githubusercontent.com/deve-sh/calit.js/master/calit-min.js"></script>