title: X-axis doesn't show correct time
body: <p>I'm using "Time data with irregular intervals" chart. xaxis data is in epoch time and it's range is 12:00 PM till 15:00 PM. The problem is that despite time range is from 12:00 PM till 15:00 PM but Highcharts xaxis labels range is 9:00 AM till 12:00 PM, that is completely wrong! What's the problem ?
  thnx.</p>