title: Date in CET timezone to user's timezone
body: <p>I have a list of list of string dates like this: <code>'17/12/2017 19:34'</code>. They are <code>CET</code> dates.</p>
  
  <p>How can I transform it to the user's browser date?</p>
  
  <p>I'm doing this:</p>
  
  <pre><code>const tzGuess = moment.tz.guess()
  
  export const toTimeZone = (time) =&gt; {
    const format = 'DD/MM/YYYY HH:mm'
    return moment(time, format).tz(tzGuess).format(format)
  }
  
  console.log(toTimeZone('17/12/2017 19:34', tzGuess))
  </code></pre>
  
  <p>but how can I say to <code>moment</code> that the date I'm passing at first is a <code>CET</code> one?</p>
  
  <p>Thanks!</p>