diff --git a/lib/NGCP/Panel/Field/DateTime.pm b/lib/NGCP/Panel/Field/DateTime.pm
new file mode 100644
index 0000000000..cde53a6994
--- /dev/null
+++ b/lib/NGCP/Panel/Field/DateTime.pm
@@ -0,0 +1,37 @@
+package NGCP::Panel::Field::DateTime;
+use HTML::FormHandler::Moose;
+use Sipwise::Base;
+extends 'HTML::FormHandler::Field::Text';
+
+has '+deflate_method' => ( default => sub { \&datetime_deflate } );
+
+sub datetime_deflate {
+                my ( $self, $value ) = @_;             
+                if(blessed($value) && $value->isa('DateTime')) {
+                    return $value->ymd('-') . ' ' . $value->hms(':');;
+                } else {
+                    return $value;
+                }
+}
+
+1;
+
+=head1 NAME
+
+NGCP::Panel::Field::DateTime
+
+=head1 DESCRIPTION
+
+
+=head1 AUTHOR
+
+Gerhard Jungwirth
+
+=head1 LICENSE
+
+This library is free software. You can redistribute it and/or modify
+it under the same terms as Perl itself.
+
+=cut
+
+# vim: set tabstop=4 expandtab:
diff --git a/lib/NGCP/Panel/Form/BillingPeaktimeSpecial.pm b/lib/NGCP/Panel/Form/BillingPeaktimeSpecial.pm
index 9d7964bf0d..7c8f32704a 100644
--- a/lib/NGCP/Panel/Form/BillingPeaktimeSpecial.pm
+++ b/lib/NGCP/Panel/Form/BillingPeaktimeSpecial.pm
@@ -15,7 +15,7 @@ sub build_render_list {[qw/submitid fields actions/]}
 sub build_form_element_class { [qw/form-horizontal/] }
 
 has_field 'start' => ( 
-    type => 'Text',
+    type => '+NGCP::Panel::Field::DateTime',
     element_attr => {
         rel => ['tooltip'],
         title => ['YYYY-MM-DD HH:mm:ss']
@@ -25,7 +25,7 @@ has_field 'start' => (
 );
 
 has_field 'end' => ( 
-    type => 'Text',
+    type => '+NGCP::Panel::Field::DateTime',
     element_attr => {
         rel => ['tooltip'],
         title => ['YYYY-MM-DD HH:mm:ss']