title: Initialize a Moment with the timezone offset that I created it with
body: <p>I'm using moment and moment-timezone in javascript, and this part of it is one of the most unintuitive API's I've ever seen.</p>
  
  <p>I would expect that:</p>
  
  <pre><code>moment("2015-12-14T04:00:00Z").utcOffset()
  </code></pre>
  
  <p>would be a pure function and return the offset included in the argument, which is 0. But instead it implicitly converts it to my local timezone offset (PST), so this returns -480 Why?? I asked what offset the object i just created has, not what offset I'm currently in. It would be like if I wrote an api where calling User.find(123).name() returns your name instead of the name of user 123.</p>
  
  <p>Anyway, I can do </p>
  
  <pre><code>moment("2015-12-14T04:00:00Z").tz("utc").utcOffset()
  </code></pre>
  
  <p>But my datetime string is dynamic, so I don't know the timezone.</p>
  
  <p>How can I get the behavior I expected, a Moment in js that is in the timezone offset included in the string i passed in?</p>