diff --git a/plugins/libcalendaring/libcalendaring.php b/plugins/libcalendaring/libcalendaring.php
index 3016e51a..9df9e00c 100644
--- a/plugins/libcalendaring/libcalendaring.php
+++ b/plugins/libcalendaring/libcalendaring.php
@@ -769,6 +769,7 @@ class libcalendaring extends rcube_plugin
             'dddd' => 'l',
             'ddd'  => 'D',
             'dd'   => 'd',
+            'd'    => 'j',
             'HH'   => '**',
             'hh'   => '%%',
             'H'    => 'G',
@@ -799,6 +800,7 @@ class libcalendaring extends rcube_plugin
             'F' => 'MMMM',
             'm' => 'MM',
             'n' => 'M',
+            'j' => 'd',
             'd' => 'dd',
             'D' => 'ddd',
             'l' => 'dddd',