title: Mongo not storing unix timestamp properly
body: <p>I am trying to store a unix timestamp on a date field in Mongo. If I save something like '1450051408' (Dec 13, 2015), in Mongo it looks like this: '1970-01-17 18:47:31.820Z'</p>
  
  <p>Here is my insert:</p>
  
  <p><code>Service.user.updateMyDate({myDate: moment().unix()});</code></p>
  
  <p>In my Mongoose model, it is specified as <code>myDate: Date</code></p>