Moment JS, UTC to Local time and Moment Timezone

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.6/moment.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.4.1/moment-timezone-with-data-2010-2020.min.js"></script>
UTC<br/>
<div id="divGuess">

</div><br/>
<div id="divUTC"></div><br/>
Your Local Time with respect to above UTC time<br/>
<div id="divLocal">
</div>    
<br/>ROMA<br/>
<div id="divZone"></div>  
<div id="divTime"></div>  
 
<br/>America date time<br/>
<div id="divUsa">
</div>

JavaScript

$(function(){
  $("#divGuess").text(moment.tz().guess());
  setInterval(function(){
    var divUtc = $('#divUTC');
    var divLocal = $('#divLocal');  
    //put UTC time into divUTC  
    divUtc.text(moment.utc().format('YYYY-MM-DD HH:mm:ss'));      
    
 
    //get text from divUTC and conver to local timezone  
    var localTime  = moment.utc(divUtc.text()).toDate();
    localTime = moment(localTime).format();
    divLocal.text(localTime);  
      
      //var myformat = null;
      var myformat = 'YYYY-MM-DD HH:mm:ss';
      $('#divZone').text(moment("2017-10-30T17:00:00+01:00").tz('Europe/Rome').format("z"));
    $('#divTime').text(moment("2017-10-30T17:00:00+01:00").tz('Europe/Rome').format(myformat));
     
    $('#divUsa').text(moment.tz('America/Los_Angeles').format('YYYY-MM-DD HH:mm:ss'));
  },1000);
});