title: date conversion to timestamp incorrect, outputs wrong timestamp
body: <p>I have a date that is stored in the database as <code>"2019-03-03T03:44:00.000Z"</code></p>
  
  <p>then in my script I need to convert it to a timestamp...</p>
  
  <pre><code>new Date(milestone.flight_time).getTime() / 1000)
  </code></pre>
  
  <p>this created a timestamp of <code>1551584640</code> which translates to <code>3/2/2019, 10:44:00 PM Standard Time)</code></p>
  
  <p>The desired result would be for a timestamp equal to the initial ISO string.</p>