diff --git a/lang/en_utf8/attforblock.php b/lang/en_utf8/attforblock.php
index eb4c0b6..0c3406d 100644
--- a/lang/en_utf8/attforblock.php
+++ b/lang/en_utf8/attforblock.php
@@ -32,6 +32,11 @@ $string['attforblock:takeattendances'] = 'Taking Attendances';
 $string['attforblock:view'] = 'Viewing Attendances';
 $string['attforblock:viewreports'] = 'Viewing Reports';
 $string['attrecords'] = 'Attendances records';
+$string['calclose'] = 'Close';
+$string['calmonths'] = '\"January\", \"February\", \"March\", \"April\", \"May\", \"June\", \"July\", \"August\", \"September\", \"October\", \"November\", \"December\"';
+$string['calshow'] = 'Choose date';
+$string['caltoday'] = 'Today';
+$string['calweekdays'] = ' \"Su\", \"Mo\", \"Tu\", \"We\", \"Th\", \"Fr\", \"Sa\"';
 $string['changeduration'] = 'Change duration';
 $string['changesession'] = 'Change session';
 $string['commonsession'] = 'Common';