Untitled

<html>
<head>
  <title>Form Validation</title>
  <script type="text/javascript">
    var thisTime = new Date(2018, 02, 03, 03, 15, 28, 00); //defined time
    //var thisTime = new Date();
    var timeStr = thisTime.toLocaleString(); //time for html use
    var thisHour = thisTime.getHours(); //separate hour html element
    var thisMonth = thisTime.getMonth(); //separate Month html element
    var mapNum = (2*thisMonth+thisHour)%24; //formula for Map Calculations
    var ImgStr = '<img src="sd_sky'+mapNum+'">' //Self navagation for proper sky image
    var h = document.getElementById("planisphere");

    document.getElementById('timestamp').innerHTML = timeStr;
    h.insertAdjacentHTML("afterbegin", imgStr); //insert image into page
</html>
</head>