'dropdown.no' => '--- هیچکدام ---',
// TODO: check translation of dropdown.this_day. It does not necessarily means "today". It means a specific ("this") day selected on calendar. See charts.php.
// 'dropdown.this_day' => 'امروز',
+// 'dropdown.last_day' => 'last day',
'dropdown.this_week' => 'هفته جاری',
'dropdown.last_week' => 'هفته آخر',
'dropdown.this_month' => 'ماه جاری',