title: JODATIME vs System.currentTimeMillis() in terms of accuracy
body: <p>I need to get the most accurate time (which is synced with the system clock), in millis. 
  I know <code>System.currentTimeMillis()</code> is accurate. 
  I also know <code>JodaTime</code>'s millis is accurate. </p>
  
  <p>Which is more accurate?</p>
  
  <p>Thanks!</p>