diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/Cells/XLCell.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/Cells/XLCell.cs
index 20cd3d3..d6b7826 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/Cells/XLCell.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/Cells/XLCell.cs
@@ -1609,12 +1609,23 @@
                     _dataType = XLCellValues.Number;
                 else if (DateTime.TryParse(val, out dtTest) && dtTest >= BaseDate)
                 {
+
                     _dataType = XLCellValues.DateTime;
 
-               if (style.NumberFormat.Format == String.Empty && style.NumberFormat.NumberFormatId == 0)
+                    if (style.NumberFormat.Format == String.Empty && style.NumberFormat.NumberFormatId == 0)
                         Style.NumberFormat.NumberFormatId = dtTest.Date == dtTest ? 14 : 22;
-
-                    val = dtTest.ToOADate().ToString();
+                    {
+                        DateTime forMillis;
+                        if (value is DateTime && (forMillis = (DateTime)value).Millisecond > 0)
+                        {
+                            val = forMillis.ToOADate().ToString();
+                        }
+                        else
+                        {
+                            val = dtTest.ToOADate().ToString();
+                        }
+                    }
+                    
                 }
                 else if (Boolean.TryParse(val, out bTest))
                 {
diff --git a/ClosedXML/ClosedXML/ClosedXML_Sandbox/Program.cs b/ClosedXML/ClosedXML/ClosedXML_Sandbox/Program.cs
index 82da5f5..669da7f 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Sandbox/Program.cs
+++ b/ClosedXML/ClosedXML/ClosedXML_Sandbox/Program.cs
@@ -15,22 +15,14 @@
 
         static void Main(string[] args)
         {
-            DateTime start, end;
-            var values = new List<Double>();
-            var wb = new XLWorkbook(@"c:\temp\issue.xlsx");
-            
-            Console.WriteLine("Saving");
-            start = DateTime.Now;
+            XLWorkbook wb = new XLWorkbook();
+            IXLWorksheet ws = wb.Worksheets.Add("test");
+            DateTime mydt = new DateTime(2014, 5, 22, 23, 32, 15, 164);
+            ws.Cell(1, 1).Value = mydt;
+            var d = ws.FirstCell().GetDateTime();
             wb.SaveAs(@"c:\temp\saved.xlsx");
-            end = DateTime.Now;
-            values.Add((end - start).TotalMinutes);
-
-            Console.WriteLine("Average: " + values.Average());
-            Console.WriteLine("Min: " + values.Min());
-            Console.WriteLine("Max: " + values.Max());
-
             Console.WriteLine("Done");
-            Console.ReadKey();
+            //Console.ReadKey();
         }
     }