title: timezone format warning with momentjs
body: <p>i use momentJS to format time from server to something similar to "2 hours ago". Server time zone is UTC while my timezone is UTC + 8 so i use the following code to make it:</p>
  
  <pre><code>  formatTime(date, timezone) {    
      let serverTime  = moment.utc(date + " " + timezone, "YYYY-MM-DD HH:mm:ss").toDate();
      return(moment(serverTime.toString()).fromNow());
    }
  
     console.log(formatTime('2019-08-06 07:48:00','UTC'));
  </code></pre>
  
  <p>'2019-08-06 07:48:00' and 'UTC' are fetch data from server. The output is correct but i have a warning message from momentJS: "<strong>Deprecation warning</strong>: value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are discouraged and will be removed in an upcoming major release."</p>