JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://momentjs.com/downloads/moment.min.js"></script>
<script src="http://momentjs.com/downloads/moment-timezone-with-data.js"></script>
<script src="http://visavie.me/test/js/jquery.datetimepicker.js"></script>
<link rel="stylesheet" href="http://visavie.me/test/css/jquery.datetimepicker.css">
time in chicago based on localtimezone:<div id="time"></div>
<br>
    time in chicago based on timestamp from the server:<div id="time2"></div>

JavaScript

function updateTime(){
				var chicago = moment.tz("America/Chicago").format('h:mm:ss A');
			   $('#time').html( chicago +", ");
			};

			moment.tz.add('America/Chicago|CST CDT|60 50|01010101010101010101010|1BQU0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Rd0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0');                                                                         

			updateTime();
			setInterval(function(){
			   updateTime();
			},1000);




	function updateTimeBasedOnServer(){
				var timestamp = 1443618723;
      			var Chicago = new Date(timestamp);
				var dateString = Chicago.format('h:mm:ss A');
			   $('#time2').html( dateString +", ");
			};

			
			updateTimeBasedOnServer();
			setInterval(function(){
			   updateTimeBasedOnServer();
			},1000);