Index: date_formatter.php
===================================================================
--- date_formatter.php	(revision 12973)
+++ date_formatter.php	(working copy)
@@ -166,11 +166,20 @@
 		if ( $sub_fields = getArrayValue($options, 'sub_fields') ) {
 			// if date is not empty, but time is empty - set time to 0, otherwise master field fomratter will complain
 			// when we have only date field on form, we need time hidden field always empty, don't ask me why!
-			if ( $object->GetDBField($sub_fields['date']) != '' && $object->GetDBField($sub_fields['time']) == '' ) {
+			if ($object->GetDBField($sub_fields['date']) != '' && $object->GetDBField($sub_fields['time']) == '') {
 				$empty_time = getArrayValue($options,'empty_time');
-				if($empty_time === false) $empty_time = adodb_mktime(0,0,0);
+				if ($empty_time === false) {
+					$empty_time = adodb_mktime(0, 0, 0);
+				}
 				$object->SetDBField($sub_fields['time'], $empty_time);
 			}
+			elseif ($object->GetDBField($sub_fields['time']) != '' && $object->GetDBField($sub_fields['date']) == '') {
+				$empty_date = getArrayValue($options,'empty_date');
+				if ($empty_date === false) {
+					$empty_date = adodb_mktime(0, 0, 0, 1, 1, 1970);
+				}
+				$object->SetDBField($sub_fields['date'], $empty_date);
+			}
 
 			$input_format['date'] = $object->Fields[ $sub_fields['date'] ]['input_format'];
 			$input_format['time'] = $object->Fields[ $sub_fields['time'] ]['input_format'];