diff --git a/pt4_bitreader.py b/pt4_bitreader.py
index bc975a3..3e4af00 100644
--- a/pt4_bitreader.py
+++ b/pt4_bitreader.py
@@ -24,7 +24,7 @@
 # along with pt4utils.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-from datetime import datetime
+import datetime
 from bitreader import BitReader
 
 class Pt4BitReader(BitReader):
@@ -33,12 +33,12 @@ class Pt4BitReader(BitReader):
     def readDateTime(self):
         """ Read and return date in epoch format
         """
-        epochShiftValue = 62135596800000L
         val = self.readUInt64()
-        kind = val >> 62
         ticks = val & 0x3FFFFFFFFFFFFFFFL
-        #return datetime.fromtimestamp((ticks / 10000) - epochShiftValue)
-        return 0
+        s = ticks / 10.0 ** 7
+        delta = datetime.timedelta(seconds=s)
+        dt = datetime.datetime(1,1,1) + delta
+        return dt
 
 
 if __name__ == "__main__":