diff --git a/ClosedXML/Excel/Cells/XLCell.cs b/ClosedXML/Excel/Cells/XLCell.cs
index 4b1b6a3..73bceb3 100644
--- a/ClosedXML/Excel/Cells/XLCell.cs
+++ b/ClosedXML/Excel/Cells/XLCell.cs
@@ -333,7 +333,8 @@
             if (_dataType == XLCellValues.DateTime || IsDateFormat())
             {
                 double dTest;
-                if (Double.TryParse(cValue, XLHelper.NumberStyle, XLHelper.ParseCulture, out dTest))
+                if (Double.TryParse(cValue, XLHelper.NumberStyle, XLHelper.ParseCulture, out dTest)
+                    && dTest.IsValidOADateNumber())
                 {
                     var format = GetFormat();
                     return DateTime.FromOADate(dTest).ToString(format);
@@ -405,15 +406,25 @@
                     return cellValue != "0";
 
                 if (_dataType == XLCellValues.DateTime)
-                    return DateTime.FromOADate(Double.Parse(cellValue, XLHelper.NumberStyle, XLHelper.ParseCulture));
+                {
+                    Double d;
+                    if (Double.TryParse(cellValue, XLHelper.NumberStyle, XLHelper.ParseCulture, out d)
+                        && d.IsValidOADateNumber())
+                        return DateTime.FromOADate(d);
+                }
 
                 if (_dataType == XLCellValues.Number)
-                    return Double.Parse(cellValue, XLHelper.NumberStyle, XLHelper.ParseCulture);
+                {
+                    Double d;
+                    if (double.TryParse(cellValue, XLHelper.NumberStyle, XLHelper.ParseCulture, out d))
+                        return d;
+                }
 
                 if (_dataType == XLCellValues.TimeSpan)
                 {
-                    // return (DateTime.FromOADate(Double.Parse(cellValue)) - baseDate);
-                    return TimeSpan.Parse(cellValue);
+                    TimeSpan t;
+                    if (TimeSpan.TryParse(cellValue, out t))
+                        return t;
                 }
 
                 return cellValue;
diff --git a/ClosedXML/XLHelper.cs b/ClosedXML/XLHelper.cs
index 8729fef..83d2434 100644
--- a/ClosedXML/XLHelper.cs
+++ b/ClosedXML/XLHelper.cs
@@ -291,7 +291,7 @@
             }
 
             // handle doubles
-            if (v is double)
+            if (v is double && ((double)v).IsValidOADateNumber())
             {
                 return DateTime.FromOADate((double)v);
             }
@@ -299,5 +299,10 @@
             // handle everything else
             return (DateTime)Convert.ChangeType(v, typeof(DateTime));
         }
+
+        internal static bool IsValidOADateNumber(this double d)
+        {
+            return -657435 <= d && d < 2958466;
+        }
     }
 }
diff --git a/ClosedXML_Tests/Excel/Cells/XLCellTests.cs b/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
index 750af3a..d6824df 100644
--- a/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
+++ b/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
@@ -210,6 +210,28 @@
         }
 
         [Test]
+        public void TryGetValue_DateTime_BadString()
+        {
+            IXLWorksheet ws = new XLWorkbook().Worksheets.Add("Sheet1");
+            DateTime outValue;
+            var date = "ABC";
+            bool success = ws.Cell("A1").SetValue(date).TryGetValue(out outValue);
+            Assert.IsFalse(success);
+        }
+
+
+        [Test]
+        public void TryGetValue_DateTime_BadString2()
+        {
+            IXLWorksheet ws = new XLWorkbook().Worksheets.Add("Sheet1");
+            DateTime outValue;
+            var date = 5545454;
+            ws.FirstCell().SetValue(date).DataType = XLCellValues.DateTime;
+            bool success = ws.FirstCell().TryGetValue(out outValue);
+            Assert.IsFalse(success);
+        }
+
+        [Test]
         public void TryGetValue_RichText_Bad()
         {
             IXLWorksheet ws = new XLWorkbook().Worksheets.Add("Sheet1");