diff --git a/code/libs/dvbobjects/dvbobjects/DVB/Descriptors.py b/code/libs/dvbobjects/dvbobjects/DVB/Descriptors.py
index 98582d5..de49d2b 100755
--- a/code/libs/dvbobjects/dvbobjects/DVB/Descriptors.py
+++ b/code/libs/dvbobjects/dvbobjects/DVB/Descriptors.py
@@ -452,7 +452,7 @@ def bytes(self):
         fmt = "!BH"
         return pack(fmt,
                     (0xF0) | (self.day >> 1),
-		    (self.day << 15) | (self.month << 11) | (self.hour << 6) | (self.minute),
+		    ((self.day & 0x01) << 15) | (self.month << 11) | (self.hour << 6) | (self.minute),
         )
 					
 
diff --git a/code/libs/dvbobjects/dvbobjects/PSI/UNT.py b/code/libs/dvbobjects/dvbobjects/PSI/UNT.py
index 07dc49a..3832c02 100755
--- a/code/libs/dvbobjects/dvbobjects/PSI/UNT.py
+++ b/code/libs/dvbobjects/dvbobjects/PSI/UNT.py
@@ -73,8 +73,9 @@ def pack(self):
                 self.operational_descriptor_loop),
             "")
         
-        fmt = "!%dsHH%dsH%ds" % (len(self.compatibility_descriptor), len(tdl_bytes), len(odl_bytes))
+        fmt = "!H%dsHH%dsH%ds" % (len(self.compatibility_descriptor), len(tdl_bytes), len(odl_bytes))
         return pack(fmt,
+                len(self.compatibility_descriptor),
     		    self.compatibility_descriptor,
     		    len(tdl_bytes) + len(odl_bytes),
     		    0xF000 | len(tdl_bytes),