title: .day() returns wrong day of month with Moment.js
body: <p>I am using Moment.js to parse a string and get the day, month and year separately:  </p>
  
  <pre><code>var date = moment("12-25-1995", "MM-DD-YYYY");
  var day = date.day();        
  </code></pre>
  
  <p>However, <code>day</code> is not 25—it's 1. What is the correct API method?</p>