Nevermind, just found the answer myself.
public class ChartDelegate : SFChartDelegate
{
public override void DidPan(SFChart chart, SFChartPanInfo info)
{
DateTime start = DateTime.FromOADate(info.Axis.VisibleRange.Start);
DateTime end = DateTime.FromOADate(info.Axis.VisibleRange.End);
Console.WriteLine("Start: " + start + " --- End: " + end);
}
}