diff --git a/application/controllers/ScheduledDowntimeController.php b/application/controllers/ScheduledDowntimeController.php
new file mode 100644
index 00000000..65ba2572
--- /dev/null
+++ b/application/controllers/ScheduledDowntimeController.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace Icinga\Module\Director\Controllers;
+
+use Icinga\Module\Director\Forms\IcingaScheduledDowntimeRangeForm;
+use Icinga\Module\Director\Objects\IcingaScheduledDowntime;
+use Icinga\Module\Director\Web\Controller\ObjectController;
+use Icinga\Module\Director\Web\Table\IcingaScheduledDowntimeRangeTable;
+
+class ScheduledDowntimeController extends ObjectController
+{
+    public function rangesAction()
+    {
+        /** @var IcingaScheduledDowntime $object */
+        $object = $this->object;
+        $this->tabs()->activate('ranges');
+        $this->addTitle($this->translate('Time period ranges'));
+        $form = IcingaScheduledDowntimeRangeForm::load()
+            ->setScheduledDowntime($object);
+
+        if (null !== ($name = $this->params->get('range'))) {
+            $this->addBackLink($this->url()->without('range'));
+            $form->loadObject([
+                'scheduled_downtime_id' => $object->get('id'),
+                'range_key'  => $name,
+                'range_type' => $this->params->get('range_type')
+            ]);
+        }
+
+        $this->content()->add($form->handleRequest());
+        IcingaScheduledDowntimeRangeTable::load($object)->renderTo($this);
+    }
+
+    public function getType()
+    {
+        return 'scheduledDowntime';
+    }
+}
diff --git a/application/controllers/ScheduledDowntimesController.php b/application/controllers/ScheduledDowntimesController.php
new file mode 100644
index 00000000..9f1bcb82
--- /dev/null
+++ b/application/controllers/ScheduledDowntimesController.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Icinga\Module\Director\Controllers;
+
+use Icinga\Module\Director\Web\Controller\ObjectsController;
+
+class ScheduledDowntimesController extends ObjectsController
+{
+    protected function addObjectsTabs()
+    {
+        $res = parent::addObjectsTabs();
+        $this->tabs()->remove('index');
+        $this->tabs()->remove('templates');
+        return $res;
+    }
+
+    protected function getTable()
+    {
+        return parent::getTable()
+            ->setBaseObjectUrl('director/scheduled-downtime');
+    }
+
+    protected function getApplyRulesTable()
+    {
+        return parent::getApplyRulesTable()->createLinksWithNames();
+    }
+
+    public function getType()
+    {
+        return 'scheduledDowntime';
+    }
+
+    public function getBaseObjectUrl()
+    {
+        return 'scheduled-downtime';
+    }
+}
diff --git a/application/controllers/SuggestController.php b/application/controllers/SuggestController.php
index e778357a..08de4781 100644
--- a/application/controllers/SuggestController.php
+++ b/application/controllers/SuggestController.php
@@ -79,6 +79,8 @@ class SuggestController extends ActionController
      * TODO: Should not remain here
      *
      * @return array
+     * @throws \Icinga\Exception\ConfigurationError
+     * @throws \Icinga\Security\SecurityException
      */
     protected function suggestLocations()
     {
@@ -152,39 +154,22 @@ class SuggestController extends ActionController
         return $r;
     }
 
-
     protected function suggestHosttemplates()
     {
         $this->assertPermission('director/hosts');
-        $db = $this->db()->getDbAdapter();
-        $query = $db->select()
-            ->from('icinga_host', 'object_name')
-            ->order('object_name')
-            ->where("object_type = 'template'")
-            ->where('template_choice_id IS NULL');
-        return $db->fetchCol($query);
+        return $this->fetchTemplateNames('icinga_host', 'template_choice_id IS NULL');
     }
 
     protected function suggestServicetemplates()
     {
         $this->assertPermission('director/services');
-        $db = $this->db()->getDbAdapter();
-        $query = $db->select()
-            ->from('icinga_service', 'object_name')
-            ->order('object_name')
-            ->where("object_type = 'template'");
-        return $db->fetchCol($query);
+        return $this->fetchTemplateNames('icinga_service', 'template_choice_id IS NULL');
     }
 
     protected function suggestNotificationtemplates()
     {
         $this->assertPermission('director/notifications');
-        $db = $this->db()->getDbAdapter();
-        $query = $db->select()
-            ->from('icinga_notification', 'object_name')
-            ->order('object_name')
-            ->where("object_type = 'template'");
-        return $db->fetchCol($query);
+        return $this->fetchTemplateNames('icinga_notification');
     }
 
     protected function suggestCommandtemplates()
@@ -200,12 +185,19 @@ class SuggestController extends ActionController
     protected function suggestUsertemplates()
     {
         $this->assertPermission('director/users');
-        $db = $this->db()->getDbAdapter();
-        $query = $db->select()
-            ->from('icinga_user', 'object_name')
-            ->order('object_name')
-            ->where("object_type = 'template'");
-        return $db->fetchCol($query);
+        return $this->fetchTemplateNames('icinga_user');
+    }
+
+    /**
+     * @return array
+     * @throws \Icinga\Security\SecurityException
+     * @codingStandardsIgnoreStart
+     */
+    protected function suggestScheduled_downtimetemplates()
+    {
+        // @codingStandardsIgnoreEnd
+        $this->assertPermission('director/scheduled-downtimes');
+        return $this->fetchTemplateNames('icinga_scheduled_downtime');
     }
 
     protected function suggestCheckcommandnames()
@@ -219,6 +211,21 @@ class SuggestController extends ActionController
         return $db->fetchCol($query);
     }
 
+    protected function fetchTemplateNames($table, $where = null)
+    {
+        $db = $this->db()->getDbAdapter();
+        $query = $db->select()
+            ->from($table, 'object_name')
+            ->where('object_type = ?', 'template')
+            ->order('object_name');
+
+        if ($where !== null) {
+            $query->where('template_choice_id IS NULL');
+        }
+
+        return $db->fetchCol($query);
+    }
+
     protected function suggestHostgroupnames()
     {
         $db = $this->db()->getDbAdapter();
@@ -322,12 +329,7 @@ class SuggestController extends ActionController
     protected function suggestDependencytemplates()
     {
         $this->assertPermission('director/hosts');
-        $db = $this->db()->getDbAdapter();
-        $query = $db->select()
-            ->from('icinga_dependency', 'object_name')
-            ->order('object_name')
-            ->where("object_type = 'template'");
-        return $db->fetchCol($query);
+        return $this->fetchTemplateNames('icinga_dependency');
     }
 
     protected function highlight($val, $search)
diff --git a/application/forms/IcingaScheduledDowntimeForm.php b/application/forms/IcingaScheduledDowntimeForm.php
new file mode 100644
index 00000000..e9231b6b
--- /dev/null
+++ b/application/forms/IcingaScheduledDowntimeForm.php
@@ -0,0 +1,116 @@
+<?php
+
+namespace Icinga\Module\Director\Forms;
+
+use Icinga\Module\Director\Web\Form\DirectorObjectForm;
+
+class IcingaScheduledDowntimeForm extends DirectorObjectForm
+{
+    /**
+     * @throws \Zend_Form_Exception
+     */
+    public function setup()
+    {
+        if ($this->isTemplate()) {
+            $this->addElement('text', 'object_name', [
+                'label'    => $this->translate('Template name'),
+                'required' => true,
+            ]);
+        } else {
+            $this->addElement('text', 'object_name', [
+                'label'    => $this->translate('Downtime name'),
+                'required' => true,
+            ]);
+        }
+        $this->addImportsElement();
+        $this->addElement('text', 'author', [
+            'label'       => $this->translate('Author'),
+            'description' => $this->translate(
+                'This name will show up as the author for ever related downtime'
+                . ' comment'
+            ),
+            'required'    => ! $this->isTemplate()
+        ]);
+        $this->addElement('textarea', 'comment', [
+            'label'    => $this->translate('Comment'),
+            'description' => $this->translate(
+                'Every related downtime will show this comment'
+            ),
+            'required' => ! $this->isTemplate(),
+            'rows'     => 4,
+        ]);
+        $this->addBoolean('fixed', [
+            'label'       => $this->translate('Fixed'),
+            'description' => $this->translate(
+                'Whether this downtime is fixed or flexible. If unsure please'
+                . ' check the related documentation:'
+                . ' https://icinga.com/docs/icinga2/latest/doc/08-advanced-topics/#downtimes'
+            ),
+            'required'    => ! $this->isTemplate(),
+        ]);
+        $this->addElement('text', 'duration', [
+            'label'       => $this->translate('Duration'),
+            'description' => $this->translate(
+                'How long the downtime lasts. Only has an effect for flexible'
+                . ' (non-fixed) downtimes. Time in seconds, supported suffixes'
+                . ' include ms (milliseconds), s (seconds), m (minutes),'
+                . ' h (hours) and d (days). To express "90 minutes" you might'
+                . ' want to write 1h 30m'
+            )
+        ]);
+        $this->addDisabledElement();
+        $this->addAssignmentElements();
+        $this->setButtons();
+    }
+
+
+    /**
+     * @return $this
+     * @throws \Zend_Form_Exception
+     */
+    protected function addAssignmentElements()
+    {
+        if ($this->isTemplate()) {
+            return $this;
+        }
+
+        $this->addElement('select', 'apply_to', [
+            'label'        => $this->translate('Apply to'),
+            'description'  => $this->translate(
+                'Whether this dependency should affect hosts or services'
+            ),
+            'required'     => true,
+            'class'        => 'autosubmit',
+            'multiOptions' => $this->optionalEnum([
+                'host'    => $this->translate('Hosts'),
+                'service' => $this->translate('Services'),
+            ])
+        ]);
+
+        $applyTo = $this->getSentOrObjectValue('apply_to');
+
+        if (! $applyTo) {
+            return $this;
+        }
+
+        $suggestionContext = ucfirst($applyTo) . 'FilterColumns';
+        $this->addAssignFilter([
+            'suggestionContext' => $suggestionContext,
+            'required' => true,
+            'description' => $this->translate(
+                'This allows you to configure an assignment filter. Please feel'
+                . ' free to combine as many nested operators as you want'
+            )
+        ]);
+
+        return $this;
+    }
+
+    protected function setObjectSuccessUrl()
+    {
+        $this->setSuccessUrl(
+            'director/scheduled-downtime',
+            $this->object()->getUrlParams()
+        );
+    }
+}
diff --git a/application/forms/IcingaScheduledDowntimeRangeForm.php b/application/forms/IcingaScheduledDowntimeRangeForm.php
new file mode 100644
index 00000000..aced5c0a
--- /dev/null
+++ b/application/forms/IcingaScheduledDowntimeRangeForm.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace Icinga\Module\Director\Forms;
+
+use Icinga\Module\Director\Objects\IcingaObject;
+use Icinga\Module\Director\Objects\IcingaScheduledDowntime;
+use Icinga\Module\Director\Objects\IcingaScheduledDowntimeRange;
+use Icinga\Module\Director\Web\Form\DirectorObjectForm;
+
+class IcingaScheduledDowntimeRangeForm extends DirectorObjectForm
+{
+    /** @var IcingaScheduledDowntime */
+    private $downtime;
+
+    /**
+     * @throws \Zend_Form_Exception
+     */
+    public function setup()
+    {
+        $this->addHidden('scheduled_downtime_id', $this->downtime->get('id'));
+        $this->addElement('text', 'range_key', [
+            'label'       => $this->translate('Day(s)'),
+            'description' => $this->translate(
+                'Might be, monday, tuesday, 2016-01-28 - have a look at the documentation for more examples'
+            ),
+        ]);
+
+        $this->addElement('text', 'range_value', [
+            'label'       => $this->translate('Timeperiods'),
+            'description' => $this->translate(
+                'One or more time periods, e.g. 00:00-24:00 or 00:00-09:00,17:00-24:00'
+            ),
+        ]);
+
+        $this->setButtons();
+    }
+
+    public function setScheduledDowntime(IcingaScheduledDowntime $downtime)
+    {
+        $this->downtime = $downtime;
+        $this->setDb($downtime->getConnection());
+        return $this;
+    }
+
+    /**
+     * @param IcingaScheduledDowntimeRange $object
+     * @throws \Icinga\Module\Director\Exception\DuplicateKeyException
+     */
+    protected function deleteObject($object)
+    {
+        $key = $object->get('range_key');
+        $downtime = $this->downtime;
+        $downtime->ranges()->remove($key);
+        $downtime->store();
+        $msg = sprintf(
+            $this->translate('Time range "%s" has been removed from %s'),
+            $key,
+            $downtime->getObjectName()
+        );
+
+        $url = $this->getSuccessUrl()->without(
+            ['range', 'range_type']
+        );
+
+        $this->setSuccessUrl($url);
+        $this->redirectOnSuccess($msg);
+    }
+
+    /**
+     * @throws \Icinga\Module\Director\Exception\DuplicateKeyException
+     */
+    public function onSuccess()
+    {
+        $object = $this->object();
+        if ($object->hasBeenModified()) {
+            $this->downtime->ranges()->setRange(
+                $this->getValue('range_key'),
+                $this->getValue('range_value')
+            );
+        }
+
+        if ($this->downtime->hasBeenModified()) {
+            if (! $object->hasBeenLoadedFromDb()) {
+                $this->setHttpResponseCode(201);
+            }
+
+            $msg = sprintf(
+                $object->hasBeenLoadedFromDb()
+                ? $this->translate('The %s has successfully been stored')
+                : $this->translate('A new %s has successfully been created'),
+                $this->translate($this->getObjectShortClassName())
+            );
+
+            $this->downtime->store($this->db);
+        } else {
+            if ($this->isApiRequest()) {
+                $this->setHttpResponseCode(304);
+            }
+            $msg = $this->translate('No action taken, object has not been modified');
+        }
+        if ($object instanceof IcingaObject) {
+            $this->setSuccessUrl(
+                'director/' . strtolower($this->getObjectShortClassName()),
+                $object->getUrlParams()
+            );
+        }
+
+        $this->redirectOnSuccess($msg);
+    }
+}
diff --git a/library/Director/Dashboard/AlertsDashboard.php b/library/Director/Dashboard/AlertsDashboard.php
index 78c4781d..447f74f2 100644
--- a/library/Director/Dashboard/AlertsDashboard.php
+++ b/library/Director/Dashboard/AlertsDashboard.php
@@ -8,6 +8,8 @@ class AlertsDashboard extends Dashboard
         'Notifications',
         'Users',
         'Timeperiods',
+        'DependencyObject',
+        'ScheduledDowntimeApply',
     );
 
     public function getTitle()
diff --git a/library/Director/Dashboard/Dashlet/ScheduledDowntimeApplyDashlet.php b/library/Director/Dashboard/Dashlet/ScheduledDowntimeApplyDashlet.php
new file mode 100644
index 00000000..8e39851e
--- /dev/null
+++ b/library/Director/Dashboard/Dashlet/ScheduledDowntimeApplyDashlet.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Icinga\Module\Director\Dashboard\Dashlet;
+
+class ScheduledDowntimeApplyDashlet extends Dashlet
+{
+    protected $icon = 'plug';
+
+    protected $requiredStats = ['scheduled_downtime'];
+
+    public function getTitle()
+    {
+        return $this->translate('Scheduled Downtimes');
+    }
+
+    public function getUrl()
+    {
+        return 'director/scheduled-downtimes/applyrules';
+    }
+}
diff --git a/library/Director/Dashboard/ObjectsDashboard.php b/library/Director/Dashboard/ObjectsDashboard.php
index 0688d4ab..02c2a4b7 100644
--- a/library/Director/Dashboard/ObjectsDashboard.php
+++ b/library/Director/Dashboard/ObjectsDashboard.php
@@ -8,8 +8,6 @@ class ObjectsDashboard extends Dashboard
         'HostObject',
         'ServiceObject',
         'CommandObject',
-        // 'Notifications',
-        'DependencyObject',
     );
 
     public function getTitle()
diff --git a/library/Director/Db.php b/library/Director/Db.php
index 3c779ea6..436aeded 100644
--- a/library/Director/Db.php
+++ b/library/Director/Db.php
@@ -457,6 +457,7 @@ class Db extends DbConnection
             'usergroup',
             'command',
             'timeperiod',
+            'scheduled_downtime',
             'notification',
             'apiuser',
             'endpoint',
diff --git a/library/Director/Db/IcingaObjectFilterHelper.php b/library/Director/Db/IcingaObjectFilterHelper.php
index b5e262fb..2eef4068 100644
--- a/library/Director/Db/IcingaObjectFilterHelper.php
+++ b/library/Director/Db/IcingaObjectFilterHelper.php
@@ -2,9 +2,10 @@
 
 namespace Icinga\Module\Director\Db;
 
-use Icinga\Exception\ProgrammingError;
 use Icinga\Module\Director\Objects\IcingaObject;
 use Icinga\Module\Director\Resolver\TemplateTree;
+use InvalidArgumentException;
+use RuntimeException;
 use Zend_Db_Select as ZfSelect;
 
 class IcingaObjectFilterHelper
@@ -16,7 +17,6 @@ class IcingaObjectFilterHelper
     /**
      * @param IcingaObject|int|string $id
      * @return int
-     * @throws ProgrammingError
      */
     public static function wantId($id)
     {
@@ -27,11 +27,11 @@ class IcingaObjectFilterHelper
         } elseif (is_string($id) && ctype_digit($id)) {
             return (int) $id;
         } else {
-            throw new ProgrammingError(
+            throw new InvalidArgumentException(sprintf(
                 'Numeric ID or IcingaObject expected, got %s',
                 // TODO: just type/class info?
                 var_export($id, 1)
-            );
+            ));
         }
     }
 
@@ -41,7 +41,6 @@ class IcingaObjectFilterHelper
      * @param string $tableAlias
      * @param string $inheritanceType
      * @return ZfSelect
-     * @throws ProgrammingError
      */
     public static function filterByTemplate(
         ZfSelect $query,
@@ -76,10 +75,10 @@ class IcingaObjectFilterHelper
                 $sub->where("$i.parent_${type}_id IN (?)", $ids);
             }
         } else {
-            throw new ProgrammingError(
+            throw new RuntimeException(sprintf(
                 'Unable to understand "%s" inheritance',
                 $inheritanceType
-            );
+            ));
         }
 
         return $query->where('EXISTS ?', $sub);
diff --git a/library/Director/IcingaConfig/IcingaConfig.php b/library/Director/IcingaConfig/IcingaConfig.php
index cb1253bd..07de66dd 100644
--- a/library/Director/IcingaConfig/IcingaConfig.php
+++ b/library/Director/IcingaConfig/IcingaConfig.php
@@ -470,6 +470,7 @@ class IcingaConfig
             ->createFileFromDb('user')
             ->createFileFromDb('notification')
             ->createFileFromDb('dependency')
+            ->createFileFromDb('scheduledDowntime')
             ;
 
         PrefetchCache::forget();
diff --git a/library/Director/Objects/IcingaObject.php b/library/Director/Objects/IcingaObject.php
index 6f2b0301..073f67cb 100644
--- a/library/Director/Objects/IcingaObject.php
+++ b/library/Director/Objects/IcingaObject.php
@@ -2558,6 +2558,8 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
             $type = 'templateChoiceHost';
         } elseif ($type === 'service_template_choice') {
             $type = 'TemplateChoiceService';
+        } elseif ($type === 'scheduled_downtime') {
+            $type = 'ScheduledDowntime';
         }
 
         return 'Icinga\\Module\\Director\\Objects\\' . $prefix . ucfirst($type);
@@ -3013,7 +3015,7 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
     {
         $params = array();
 
-        if ($this->isApplyRule()) {
+        if ($this->isApplyRule() && ! $this instanceof IcingaScheduledDowntime) {
             $params['id'] = $this->get('id');
         } else {
             $params = array('name' => $this->getObjectName());
diff --git a/library/Director/Objects/IcingaScheduledDowntime.php b/library/Director/Objects/IcingaScheduledDowntime.php
new file mode 100644
index 00000000..c8f59d54
--- /dev/null
+++ b/library/Director/Objects/IcingaScheduledDowntime.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace Icinga\Module\Director\Objects;
+
+use Icinga\Module\Director\IcingaConfig\IcingaConfigHelper as c;
+use RuntimeException;
+
+class IcingaScheduledDowntime extends IcingaObject
+{
+    protected $table = 'icinga_scheduled_downtime';
+
+    protected $defaultProperties = [
+        'id'                => null,
+        'zone_id'           => null,
+        'object_name'       => null,
+        'object_type'       => null,
+        'disabled'          => 'n',
+        'author'            => null,
+        'comment'           => null,
+        'fixed'             => null,
+        'duration'          => null,
+        'apply_to'          => null,
+        'assign_filter'     => null,
+    ];
+
+    protected $supportsImports = true;
+
+    protected $supportsRanges = true;
+
+    protected $supportsApplyRules = true;
+
+    protected $relations = [
+        'zone' => 'IcingaZone',
+    ];
+
+    protected $booleans = [
+        'fixed' => 'fixed',
+    ];
+
+    protected $intervalProperties = [
+        'duration' => 'duration',
+    ];
+
+    protected $propertiesNotForRendering = [
+        'id',
+        'apply_to',
+        'object_name',
+        'object_type',
+    ];
+
+    /**
+     * @return string
+     */
+    protected function renderObjectHeader()
+    {
+        if ($this->isApplyRule()) {
+            if (($to = $this->get('apply_to')) === null) {
+                throw new RuntimeException(sprintf(
+                    'Applied notification "%s" has no valid object type',
+                    $this->getObjectName()
+                ));
+            }
+
+            return sprintf(
+                "%s %s %s to %s {\n",
+                $this->getObjectTypeName(),
+                $this->getType(),
+                c::renderString($this->getObjectName()),
+                ucfirst($to)
+            );
+        } else {
+            return parent::renderObjectHeader();
+        }
+    }
+
+    public function getOnDeleteUrl()
+    {
+        if ($this->isApplyRule()) {
+            return 'director/scheduled-downtimes/applyrules';
+        } elseif ($this->isTemplate()) {
+            return 'director/scheduled-downtimes/templates';
+        } else {
+            return 'director/scheduled-downtimes';
+        }
+    }
+
+    public function isActive($now = null)
+    {
+        if ($now === null) {
+            $now = time();
+        }
+
+        foreach ($this->ranges()->getRanges() as $range) {
+            if ($range->isActive($now)) {
+                return true;
+            }
+        }
+
+        // TODO: no range currently means (and renders) "never", Icinga behaves
+        //       different. Figure out whether and how we should support this
+        return false;
+    }
+
+    protected function prefersGlobalZone()
+    {
+        return false;
+    }
+}
diff --git a/library/Director/Objects/IcingaScheduledDowntimeRange.php b/library/Director/Objects/IcingaScheduledDowntimeRange.php
new file mode 100644
index 00000000..c2984e5a
--- /dev/null
+++ b/library/Director/Objects/IcingaScheduledDowntimeRange.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Icinga\Module\Director\Objects;
+
+use Icinga\Module\Director\Data\Db\DbObject;
+
+class IcingaScheduledDowntimeRange extends DbObject
+{
+    protected $keyName = ['scheduled_downtime_id', 'range_key', 'range_type'];
+
+    protected $table = 'icinga_scheduled_downtime_range';
+
+    protected $defaultProperties = [
+        'scheduled_downtime_id' => null,
+        'range_key'             => null,
+        'range_value'           => null,
+        'range_type'            => 'include',
+        'merge_behaviour'       => 'set',
+    ];
+
+    public function isActive($now = null)
+    {
+        if ($now === null) {
+            $now = time();
+        }
+
+        if (false === ($weekDay = $this->getWeekDay($this->get('range_key')))) {
+            // TODO, dates are not yet supported
+            return false;
+        }
+
+        if ((int) strftime('%w', $now) !== $weekDay) {
+            return false;
+        }
+
+        $timeRanges = preg_split('/\s*,\s*/', $this->get('range_value'), -1, PREG_SPLIT_NO_EMPTY);
+        foreach ($timeRanges as $timeRange) {
+            if ($this->timeRangeIsActive($timeRange, $now)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    protected function timeRangeIsActive($rangeString, $now)
+    {
+        $hBegin = $mBegin = $hEnd = $mEnd = null;
+        if (sscanf($rangeString, '%2d:%2d-%2d:%2d', $hBegin, $mBegin, $hEnd, $mEnd) === 4) {
+            if ($this->timeFromHourMin($hBegin, $mBegin, $now) <= $now
+                && $this->timeFromHourMin($hEnd, $mEnd, $now) >= $now
+            ) {
+                return true;
+            }
+        } else {
+            // TODO: throw exception?
+        }
+
+        return false;
+    }
+
+    protected function timeFromHourMin($hour, $min, $now)
+    {
+        return strtotime(sprintf('%s %02d:%02d:00', date('Y-m-d', $now), $hour, $min));
+    }
+
+    protected function getWeekDay($day)
+    {
+        switch ($day) {
+            case 'sunday':
+                return 0;
+            case 'monday':
+                return 1;
+            case 'tuesday':
+                return 2;
+            case 'wednesday':
+                return 3;
+            case 'thursday':
+                return 4;
+            case 'friday':
+                return 5;
+            case 'saturday':
+                return 6;
+        }
+
+        return false;
+    }
+}
diff --git a/library/Director/Objects/IcingaScheduledDowntimeRanges.php b/library/Director/Objects/IcingaScheduledDowntimeRanges.php
new file mode 100644
index 00000000..ba2ec0d3
--- /dev/null
+++ b/library/Director/Objects/IcingaScheduledDowntimeRanges.php
@@ -0,0 +1,297 @@
+<?php
+
+namespace Icinga\Module\Director\Objects;
+
+use Countable;
+use Exception;
+use Iterator;
+use Icinga\Module\Director\IcingaConfig\IcingaConfigHelper as c;
+use Icinga\Module\Director\IcingaConfig\IcingaConfigRenderer;
+
+class IcingaScheduledDowntimeRanges implements Iterator, Countable, IcingaConfigRenderer
+{
+    protected $storedRanges = [];
+
+    protected $ranges = [];
+
+    protected $modified = false;
+
+    protected $object;
+
+    private $position = 0;
+
+    protected $idx = array();
+
+    public function __construct(IcingaObject $object)
+    {
+        $this->object = $object;
+    }
+
+    public function count()
+    {
+        return count($this->ranges);
+    }
+
+    public function rewind()
+    {
+        $this->position = 0;
+    }
+
+    public function hasBeenModified()
+    {
+        return $this->modified;
+    }
+
+    public function current()
+    {
+        if (! $this->valid()) {
+            return null;
+        }
+
+        return $this->ranges[$this->idx[$this->position]];
+    }
+
+    public function key()
+    {
+        return $this->idx[$this->position];
+    }
+
+    public function next()
+    {
+        ++$this->position;
+    }
+
+    public function valid()
+    {
+        return array_key_exists($this->position, $this->idx);
+    }
+
+    public function get($key)
+    {
+        if (array_key_exists($key, $this->ranges)) {
+            return $this->ranges[$key];
+        }
+
+        return null;
+    }
+
+    public function getValues()
+    {
+        $res = array();
+        foreach ($this->ranges as $key => $range) {
+            $res[$key] = $range->range_value;
+        }
+
+        return (object) $res;
+    }
+
+    public function getOriginalValues()
+    {
+        $res = array();
+        foreach ($this->storedRanges as $key => $range) {
+            $res[$key] = $range->range_value;
+        }
+
+        return (object) $res;
+    }
+
+    public function getRanges()
+    {
+        return $this->ranges;
+    }
+
+    protected function modify($range, $value)
+    {
+        $this->ranges[$range]->range_key = $value;
+    }
+
+    public function set($ranges)
+    {
+        foreach ($ranges as $range => $value) {
+            $this->setRange($range, $value);
+        }
+
+        $toDelete = array_diff(array_keys($this->ranges), array_keys($ranges));
+        foreach ($toDelete as $range) {
+            $this->remove($range);
+        }
+
+        return $this;
+    }
+
+    public function setRange($range, $value)
+    {
+        if ($value === null && array_key_exists($range, $this->ranges)) {
+            $this->remove($range);
+            return $this;
+        }
+
+        if (array_key_exists($range, $this->ranges)) {
+            if ($this->ranges[$range]->range_value === $value) {
+                return $this;
+            } else {
+                $this->ranges[$range]->range_value = $value;
+                $this->modified = true;
+            }
+        } else {
+            $this->ranges[$range] = IcingaScheduledDowntimeRange::create([
+                'scheduled_downtime_id' => $this->object->id,
+                'range_key'             => $range,
+                'range_value'           => $value,
+            ]);
+            $this->modified = true;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Magic isset check
+     *
+     * @return boolean
+     */
+    public function __isset($range)
+    {
+        return array_key_exists($range, $this->ranges);
+    }
+
+    public function remove($range)
+    {
+        if (array_key_exists($range, $this->ranges)) {
+            unset($this->ranges[$range]);
+        }
+
+        $this->modified = true;
+        $this->refreshIndex();
+    }
+
+    public function clear()
+    {
+        $this->ranges = [];
+        $this->modified = true;
+        $this->refreshIndex();
+    }
+
+    protected function refreshIndex()
+    {
+        ksort($this->ranges);
+        $this->idx = array_keys($this->ranges);
+    }
+
+    protected function getRangeClass()
+    {
+        return __NAMESPACE__ . '\\Icinga' .ucfirst($this->object->getShortTableName()) . 'Range';
+    }
+
+    public function listRangesNames()
+    {
+        return array_keys($this->ranges);
+    }
+
+    public function getType()
+    {
+        return $this->object->getShortTableName();
+    }
+
+    public function getRangeTableName()
+    {
+        return $this->object->getTableName() . '_range';
+    }
+
+    protected function loadFromDb()
+    {
+        $db = $this->object->getDb();
+        $connection = $this->object->getConnection();
+
+        $table = $this->getRangeTableName();
+
+        $query = $db->select()
+            ->from(['o' => $table])
+            ->where('o.scheduled_downtime_id = ?', (int) $this->object->get('id'))
+            ->order('o.range_key');
+
+        $this->ranges = IcingaScheduledDowntimeRange::loadAll($connection, $query, 'range_key');
+        $this->storedRanges = array();
+
+        foreach ($this->ranges as $key => $range) {
+            $this->storedRanges[$key] = clone($range);
+        }
+
+        return $this;
+    }
+
+    public function store()
+    {
+        $db = $this->object->getConnection();
+        foreach ($this->ranges as $range) {
+            $range->scheduled_downtime_id = $this->object->id;
+            $range->store($db);
+        }
+
+        foreach (array_diff(array_keys($this->storedRanges), array_keys($this->ranges)) as $delete) {
+            $db->getDbAdapter()->delete(
+                'icinga_scheduled_downtime_range',
+                $this->storedRanges[$delete]->createWhere()
+            );
+        }
+
+        $this->storedRanges = $this->ranges;
+
+        return true;
+    }
+
+    protected function getClass()
+    {
+        return __NAMESPACE__ . '\\IcingaScheduledDowntimeRange';
+    }
+
+    public static function loadForStoredObject(IcingaObject $object)
+    {
+        $ranges = new static($object);
+        return $ranges->loadFromDb();
+    }
+
+    public function toConfigString()
+    {
+        if (empty($this->ranges) && $this->object->object_type === 'template') {
+            return '';
+        }
+
+        $string = "    ranges = {\n";
+
+        foreach ($this->ranges as $range) {
+            $string .= sprintf(
+                "        %s\t= %s\n",
+                c::renderString($range->range_key),
+                c::renderString($range->range_value)
+            );
+        }
+
+        return $string . "    }\n";
+    }
+
+    public function toLegacyConfigString()
+    {
+        return '';
+    }
+
+    public function __toString()
+    {
+        try {
+            return $this->toConfigString();
+        } catch (Exception $e) {
+            trigger_error($e);
+            $previousHandler = set_exception_handler(
+                function () {
+                }
+            );
+            restore_error_handler();
+            if ($previousHandler !== null) {
+                call_user_func($previousHandler, $e);
+                die();
+            } else {
+                die($e->getMessage());
+            }
+        }
+    }
+}
diff --git a/library/Director/Web/ActionBar/TemplateActionBar.php b/library/Director/Web/ActionBar/TemplateActionBar.php
index 9278559b..5364c16e 100644
--- a/library/Director/Web/ActionBar/TemplateActionBar.php
+++ b/library/Director/Web/ActionBar/TemplateActionBar.php
@@ -8,7 +8,7 @@ class TemplateActionBar extends DirectorBaseActionBar
 {
     protected function assemble()
     {
-        $type = $this->type;
+        $type = str_replace('_', '-', $this->type);
         $plType = preg_replace('/cys$/', 'cies', $type . 's');
         $renderTree = $this->url->getParam('render') === 'tree';
         $renderParams = $renderTree ? null : ['render' => 'tree'];
diff --git a/library/Director/Web/Controller/ObjectController.php b/library/Director/Web/Controller/ObjectController.php
index 0dbcba34..75ef7d4d 100644
--- a/library/Director/Web/Controller/ObjectController.php
+++ b/library/Director/Web/Controller/ObjectController.php
@@ -79,7 +79,11 @@ abstract class ObjectController extends ActionController
                     'add'
                 );
             } else {
-                $this->tabs(new ObjectTabs($this->getType(), $this->getAuth(), $this->object));
+                $this->tabs(new ObjectTabs(
+                    $this->getRequest()->getControllerName(),
+                    $this->getAuth(),
+                    $this->object
+                ));
             }
         }
     }
diff --git a/library/Director/Web/Controller/ObjectsController.php b/library/Director/Web/Controller/ObjectsController.php
index b056e58c..ec868a82 100644
--- a/library/Director/Web/Controller/ObjectsController.php
+++ b/library/Director/Web/Controller/ObjectsController.php
@@ -48,8 +48,11 @@ abstract class ObjectsController extends ActionController
         if (substr($this->getType(), -5) === 'Group') {
             $tabName = 'groups';
         }
-        $this->tabs(new ObjectsTabs($this->getBaseType(), $this->Auth()))
-            ->activate($tabName);
+        $this->tabs(new ObjectsTabs(
+            $this->getBaseType(),
+            $this->Auth(),
+            $this->getBaseObjectUrl()
+        ))->activate($tabName);
 
         return $this;
     }
@@ -106,7 +109,7 @@ abstract class ObjectsController extends ActionController
             ->addObjectsTabs()
             ->setAutorefreshInterval(10)
             ->addTitle($this->translate(ucfirst($this->getPluralType())))
-            ->actions(new ObjectsActionBar($type, $this->url()));
+            ->actions(new ObjectsActionBar($this->getBaseObjectUrl(), $this->url()));
 
         if ($type === 'command' && $this->params->get('type') === 'external_object') {
             $this->tabs()->activate('external');
@@ -126,7 +129,22 @@ abstract class ObjectsController extends ActionController
     protected function getTable()
     {
         return ObjectsTable::create($this->getType(), $this->db())
-            ->setAuth($this->getAuth());
+            ->setAuth($this->getAuth())
+            ->setBaseObjectUrl($this->getBaseObjectUrl());
+    }
+
+    /**
+     * @return ApplyRulesTable
+     * @throws NotFoundError
+     */
+    protected function getApplyRulesTable()
+    {
+        $table = new ApplyRulesTable($this->db());
+        $table->setType($this->getType())
+            ->setBaseObjectUrl($this->getBaseObjectUrl());
+        $this->eventuallyFilterCommand($table);
+
+        return $table;
     }
 
     /**
@@ -240,12 +258,13 @@ abstract class ObjectsController extends ActionController
                 $this->translate('All your %s Apply Rules'),
                 $tType
             );
+        $baseUrl = 'director/' . $this->getBaseObjectUrl();
         $this->actions()
             //->add($this->getBackToDashboardLink())
             ->add(
                 Link::create(
                     $this->translate('Add'),
-                    "director/$type/add",
+                    "${baseUrl}/add",
                     ['type' => 'apply'],
                     [
                         'title' => sprintf(
@@ -258,10 +277,7 @@ abstract class ObjectsController extends ActionController
                 )
             );
 
-        $table = new ApplyRulesTable($this->db());
-        $table->setType($this->getType());
-        $this->eventuallyFilterCommand($table);
-        $table->renderTo($this);
+        $this->getApplyRulesTable()->renderTo($this);
     }
 
     /**
@@ -429,6 +445,11 @@ abstract class ObjectsController extends ActionController
         }
     }
 
+    protected function getBaseObjectUrl()
+    {
+        return $this->getType();
+    }
+
     /**
      * @return string
      */
diff --git a/library/Director/Web/Form/DirectorObjectForm.php b/library/Director/Web/Form/DirectorObjectForm.php
index 83447810..f5a6d1bf 100644
--- a/library/Director/Web/Form/DirectorObjectForm.php
+++ b/library/Director/Web/Form/DirectorObjectForm.php
@@ -1154,7 +1154,7 @@ abstract class DirectorObjectForm extends DirectorForm
             return $this;
         }
 
-        if (in_array($this->getObjectShortClassName(), ['TimePeriod'])) {
+        if (in_array($this->getObjectShortClassName(), ['TimePeriod', 'ScheduledDowntime'])) {
             $required = false;
         } else {
             $required = $required !== null ? $required : !$this->isTemplate();
diff --git a/library/Director/Web/Form/QuickForm.php b/library/Director/Web/Form/QuickForm.php
index 83bf5cf8..bad222d1 100644
--- a/library/Director/Web/Form/QuickForm.php
+++ b/library/Director/Web/Form/QuickForm.php
@@ -3,12 +3,12 @@
 namespace Icinga\Module\Director\Web\Form;
 
 use Icinga\Application\Icinga;
-use Icinga\Exception\ProgrammingError;
 use Icinga\Web\Notification;
 use Icinga\Web\Request;
 use Icinga\Web\Response;
 use Icinga\Web\Url;
 use Exception;
+use RuntimeException;
 
 /**
  * QuickForm wants to be a base class for simple forms
@@ -225,7 +225,7 @@ abstract class QuickForm extends QuickBaseForm
     {
         if ($this->isApiRequest === null) {
             if ($this->request === null) {
-                throw new ProgrammingError(
+                throw new RuntimeException(
                     'Early acess to isApiRequest(). This is not possible, sorry'
                 );
             }
@@ -510,7 +510,7 @@ abstract class QuickForm extends QuickBaseForm
     public function setRequest(Request $request)
     {
         if ($this->request !== null) {
-            throw new ProgrammingError('Unable to set request twice');
+            throw new RuntimeException('Unable to set request twice');
         }
 
         $this->request = $request;
diff --git a/library/Director/Web/Table/ApplyRulesTable.php b/library/Director/Web/Table/ApplyRulesTable.php
index 01dc7cf9..18131847 100644
--- a/library/Director/Web/Table/ApplyRulesTable.php
+++ b/library/Director/Web/Table/ApplyRulesTable.php
@@ -25,6 +25,13 @@ class ApplyRulesTable extends ZfQueryBasedTable
 
     private $type;
 
+    /** @var IcingaObject */
+    protected $dummyObject;
+
+    protected $baseObjectUrl;
+
+    protected $linkWithName = false;
+
     public static function create($type, Db $db)
     {
         $table = new static($db);
@@ -35,6 +42,21 @@ class ApplyRulesTable extends ZfQueryBasedTable
     public function setType($type)
     {
         $this->type = $type;
+
+        return $this;
+    }
+
+    public function setBaseObjectUrl($url)
+    {
+        $this->baseObjectUrl = $url;
+
+        return $this;
+    }
+
+    public function createLinksWithNames($linksWithName = true)
+    {
+        $this->linkWithName = (bool) $linksWithName;
+
         return $this;
     }
 
@@ -50,9 +72,12 @@ class ApplyRulesTable extends ZfQueryBasedTable
 
     public function renderRow($row)
     {
-        $url = Url::fromPath("director/{$this->type}/edit", [
-            'id' => $row->id,
-        ]);
+        if ($this->linkWithName) {
+            $params = ['name' => $row->object_name];
+        } else {
+            $params = ['id' => $row->id];
+        }
+        $url = Url::fromPath("director/{$this->baseObjectUrl}/edit", $params);
 
         $tr = static::tr([
             static::td(Link::create($row->object_name, $url)),
@@ -67,6 +92,14 @@ class ApplyRulesTable extends ZfQueryBasedTable
         return $tr;
     }
 
+    /**
+     * Should be triggered from renderRow, still unused.
+     *
+     * @param IcingaObject $template
+     * @param string $inheritance
+     * @return $this
+     * @throws \Icinga\Exception\ProgrammingError
+     */
     public function filterTemplate(
         IcingaObject $template,
         $inheritance = IcingaObjectFilterHelper::INHERIT_DIRECT
@@ -99,32 +132,32 @@ class ApplyRulesTable extends ZfQueryBasedTable
 
     public function createActionLinks($row)
     {
-        $type = $this->type;
+        $baseUrl = 'director/' . $this->baseObjectUrl;
         $links = [];
         $links[] = Link::create(
             Icon::create('sitemap'),
-            "director/${type}template/applytargets",
+            "${baseUrl}template/applytargets",
             ['id' => $row->id],
             ['title' => $this->translate('Show affected Objects')]
         );
 
         $links[] = Link::create(
             Icon::create('edit'),
-            "director/$type/edit",
+            "$baseUrl/edit",
             ['id' => $row->id],
             ['title' => $this->translate('Modify this Apply Rule')]
         );
 
         $links[] = Link::create(
             Icon::create('doc-text'),
-            "director/$type/render",
+            "$baseUrl/render",
             ['id' => $row->id],
             ['title' => $this->translate('Apply Rule rendering preview')]
         );
 
         $links[] = Link::create(
             Icon::create('history'),
-            "director/$type/history",
+            "$baseUrl/history",
             ['id' => $row->id],
             ['title' => $this->translate('Apply rule history')]
         );
@@ -149,9 +182,22 @@ class ApplyRulesTable extends ZfQueryBasedTable
         return FilterRenderer::applyToQuery($filter, $query);
     }
 
+
+    /**
+     * @return IcingaObject
+     */
+    protected function getDummyObject()
+    {
+        if ($this->dummyObject === null) {
+            $type = $this->type;
+            $this->dummyObject = IcingaObject::createByType($type);
+        }
+        return $this->dummyObject;
+    }
+
     public function prepareQuery()
     {
-        $type = $this->type;
+        $table = $this->getDummyObject()->getTableName();
         $columns = [
             'id'            => 'o.id',
             'object_name'   => 'o.object_name',
@@ -159,13 +205,13 @@ class ApplyRulesTable extends ZfQueryBasedTable
             'assign_filter' => 'o.assign_filter',
         ];
         $query = $this->db()->select()->from(
-            ['o' => "icinga_$type"],
+            ['o' => $table],
             $columns
         )->where(
             "object_type = 'apply'"
         )->order('o.object_name');
 
-        if ($type === 'service') {
+        if ($this->type === 'service') {
             $query->where('service_set_id IS NULL');
         }
 
diff --git a/library/Director/Web/Table/IcingaScheduledDowntimeRangeTable.php b/library/Director/Web/Table/IcingaScheduledDowntimeRangeTable.php
new file mode 100644
index 00000000..5edd5d87
--- /dev/null
+++ b/library/Director/Web/Table/IcingaScheduledDowntimeRangeTable.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Icinga\Module\Director\Web\Table;
+
+use Icinga\Module\Director\Objects\IcingaScheduledDowntime;
+use dipl\Html\Link;
+use dipl\Web\Table\ZfQueryBasedTable;
+
+class IcingaScheduledDowntimeRangeTable extends ZfQueryBasedTable
+{
+    /** @var IcingaScheduledDowntime */
+    protected $downtime;
+
+    protected $searchColumns = [
+        'range_key',
+        'range_value',
+    ];
+
+    /**
+     * @param IcingaScheduledDowntime $downtime
+     * @return static
+     */
+    public static function load(IcingaScheduledDowntime $downtime)
+    {
+        $table = new static($downtime->getConnection());
+        $table->downtime = $downtime;
+        $table->getAttributes()->set('data-base-target', '_self');
+
+        return $table;
+    }
+
+    public function renderRow($row)
+    {
+        return $this::row([
+            Link::create(
+                $row->range_key,
+                'director/scheduled-downtime/ranges',
+                [
+                    'name'       => $this->downtime->getObjectName(),
+                    'range'      => $row->range_key,
+                    'range_type' => 'include'
+                ]
+            ),
+            $row->range_value
+        ]);
+    }
+
+    public function getColumnsToBeRendered()
+    {
+        return [
+            $this->translate('Day(s)'),
+            $this->translate('Timeperiods'),
+        ];
+    }
+
+    public function prepareQuery()
+    {
+        return $this->db()->select()->from(
+            ['r' => 'icinga_scheduled_downtime_range'],
+            [
+                'scheduled_downtime_id' => 'r.scheduled_downtime_id',
+                'range_key'   => 'r.range_key',
+                'range_value' => 'r.range_value',
+            ]
+        )->where('r.scheduled_downtime_id = ?', $this->downtime->id);
+    }
+}
diff --git a/library/Director/Web/Table/ObjectsTable.php b/library/Director/Web/Table/ObjectsTable.php
index bb49c162..4d20209e 100644
--- a/library/Director/Web/Table/ObjectsTable.php
+++ b/library/Director/Web/Table/ObjectsTable.php
@@ -33,6 +33,8 @@ class ObjectsTable extends ZfQueryBasedTable
 
     protected $type;
 
+    protected $baseObjectUrl;
+
     /** @var IcingaObject */
     protected $dummyObject;
 
@@ -62,6 +64,17 @@ class ObjectsTable extends ZfQueryBasedTable
         return $this->type;
     }
 
+    /**
+     * @param string $url
+     * @return $this
+     */
+    public function setBaseObjectUrl($url)
+    {
+        $this->baseObjectUrl = $url;
+
+        return $this;
+    }
+
     /**
      * @return Auth
      */
@@ -119,7 +132,7 @@ class ObjectsTable extends ZfQueryBasedTable
 
     protected function renderObjectNameColumn($row)
     {
-        $type = $this->getType();
+        $type = $this->baseObjectUrl;
         $url = Url::fromPath("director/${type}", [
             'name' => $row->object_name
         ]);
diff --git a/library/Director/Web/Table/TemplatesTable.php b/library/Director/Web/Table/TemplatesTable.php
index 8f94ced0..366790a9 100644
--- a/library/Director/Web/Table/TemplatesTable.php
+++ b/library/Director/Web/Table/TemplatesTable.php
@@ -54,7 +54,7 @@ class TemplatesTable extends ZfQueryBasedTable implements FilterableByUsage
     public function renderRow($row)
     {
         $name = $row->object_name;
-        $type = $this->getType();
+        $type = str_replace('_', '-', $this->getType());
         $caption = $row->is_used === 'y' ? $name : [
             $name,
             Html::tag(
diff --git a/library/Director/Web/Tabs/ObjectTabs.php b/library/Director/Web/Tabs/ObjectTabs.php
index f17f01e6..8953ccf1 100644
--- a/library/Director/Web/Tabs/ObjectTabs.php
+++ b/library/Director/Web/Tabs/ObjectTabs.php
@@ -117,7 +117,7 @@ class ObjectTabs extends Tabs
 
         if ($object->supportsRanges()) {
             $this->add('ranges', [
-                'url'       => 'director/timeperiod/ranges',
+                'url'       => "director/${type}/ranges",
                 'urlParams' => $params,
                 'label'     => $this->translate('Ranges')
             ]);
diff --git a/library/Director/Web/Tabs/ObjectsTabs.php b/library/Director/Web/Tabs/ObjectsTabs.php
index 7519eaee..017d042d 100644
--- a/library/Director/Web/Tabs/ObjectsTabs.php
+++ b/library/Director/Web/Tabs/ObjectsTabs.php
@@ -11,14 +11,14 @@ class ObjectsTabs extends Tabs
 {
     use TranslationHelper;
 
-    public function __construct($type, Auth $auth)
+    public function __construct($type, Auth $auth, $typeUrl)
     {
         $object = IcingaObject::createByType($type);
         if ($object->isGroup()) {
-            $object = IcingaObject::createByType(substr($type, 0, -5));
+            $object = IcingaObject::createByType(substr($typeUrl, 0, -5));
         }
 
-        $plType = strtolower(preg_replace('/cys$/', 'cies', $type . 's'));
+        $plType = strtolower(preg_replace('/cys$/', 'cies', $typeUrl . 's'));
         if ($auth->hasPermission("director/${plType}")) {
             $this->add('index', array(
                 'url'   => sprintf('director/%s', $plType),
@@ -56,7 +56,7 @@ class ObjectsTabs extends Tabs
 
             if ($object->supportsGroups()) {
                 $this->add('groups', array(
-                    'url' => sprintf('director/%sgroups', $type),
+                    'url' => sprintf('director/%sgroups', $typeUrl),
                     'label' => $this->translate('Groups')
                 ));
             }
@@ -65,12 +65,12 @@ class ObjectsTabs extends Tabs
         if ($auth->hasPermission('director/admin')) {
             if ($object->supportsChoices()) {
                 $this->add('choices', array(
-                    'url' => sprintf('director/templatechoices/%s', $type),
+                    'url' => sprintf('director/templatechoices/%s', $typeUrl),
                     'label' => $this->translate('Choices')
                 ));
             }
         }
-        if ($object->supportsSets() && $auth->hasPermission("director/${type}sets")) {
+        if ($object->supportsSets() && $auth->hasPermission("director/${typeUrl}sets")) {
             $this->add('sets', array(
                 'url'    => sprintf('director/%s/sets', $plType),
                 'label' => $this->translate('Sets')
diff --git a/library/Director/Web/Widget/ActivityLogInfo.php b/library/Director/Web/Widget/ActivityLogInfo.php
index abb548f0..4a8c651d 100644
--- a/library/Director/Web/Widget/ActivityLogInfo.php
+++ b/library/Director/Web/Widget/ActivityLogInfo.php
@@ -504,12 +504,15 @@ class ActivityLogInfo extends HtmlDocument
 
     protected function getLinkToObject()
     {
+        // TODO: This logic is redundant and should be centralized
         $entry = $this->entry;
         $name = $entry->object_name;
         $controller = preg_replace('/^icinga_/', '', $entry->object_type);
 
         if ($controller === 'service_set') {
             $controller = 'serviceset';
+        } elseif ($controller === 'scheduled_downtime') {
+            $controller = 'scheduled-downtime';
         }
 
         return Link::create(
diff --git a/library/vendor/ipl/Html/FormElement/BaseFormElement.php b/library/vendor/ipl/Html/FormElement/BaseFormElement.php
index db50241b..2db0efad 100644
--- a/library/vendor/ipl/Html/FormElement/BaseFormElement.php
+++ b/library/vendor/ipl/Html/FormElement/BaseFormElement.php
@@ -41,10 +41,18 @@ abstract class BaseFormElement extends BaseHtmlElement
     /**
      * Link constructor.
      * @param $name
-     * @param $value
      * @param \dipl\Html\Attributes|array|null $attributes
      */
     public function __construct($name, $attributes = null)
+    {
+        $this->registerAttributeCallbacks();
+        if ($attributes !== null) {
+            $this->addAttributes($attributes);
+        }
+        $this->setName($name);
+    }
+
+    protected function registerAttributeCallbacks()
     {
         $this->getAttributes()
             ->registerAttributeCallback('label', [$this, 'getNoAttribute'], [$this, 'setLabel'])
@@ -53,10 +61,6 @@ abstract class BaseFormElement extends BaseHtmlElement
             ->registerAttributeCallback('description', [$this, 'getNoAttribute'], [$this, 'setDescription'])
             ->registerAttributeCallback('validators', null, [$this, 'setValidators'])
             ->registerAttributeCallback('required', [$this, 'getRequiredAttribute'], [$this, 'setRequired']);
-        if ($attributes !== null) {
-            $this->addAttributes($attributes);
-        }
-        $this->setName($name);
     }
 
     /**
diff --git a/schema/mysql-migrations/upgrade_161.sql b/schema/mysql-migrations/upgrade_161.sql
new file mode 100644
index 00000000..f8134a4b
--- /dev/null
+++ b/schema/mysql-migrations/upgrade_161.sql
@@ -0,0 +1,58 @@
+CREATE TABLE icinga_scheduled_downtime (
+  id INT(10) UNSIGNED AUTO_INCREMENT NOT NULL,
+  object_name VARCHAR(255) NOT NULL,
+  zone_id INT(10) UNSIGNED DEFAULT NULL,
+  object_type ENUM('object', 'template', 'apply') NOT NULL,
+  disabled ENUM('y', 'n') NOT NULL DEFAULT 'n',
+  apply_to ENUM('host', 'service') DEFAULT NULL,
+  assign_filter TEXT DEFAULT NULL,
+  author VARCHAR(255) DEFAULT NULL,
+  comment TEXT DEFAULT NULL,
+  fixed ENUM('y', 'n') DEFAULT NULL,
+  duration INT(10) UNSIGNED DEFAULT NULL,
+  PRIMARY KEY (id),
+  UNIQUE INDEX object_name (object_name),
+  CONSTRAINT icinga_scheduled_downtime_zone
+  FOREIGN KEY zone (zone_id)
+  REFERENCES icinga_zone (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE icinga_scheduled_downtime_inheritance (
+  scheduled_downtime_id INT(10) UNSIGNED NOT NULL,
+  parent_scheduled_downtime_id INT(10) UNSIGNED NOT NULL,
+  weight MEDIUMINT UNSIGNED DEFAULT NULL,
+  PRIMARY KEY (scheduled_downtime_id, parent_scheduled_downtime_id),
+  UNIQUE KEY unique_order (scheduled_downtime_id, weight),
+  CONSTRAINT icinga_scheduled_downtime_inheritance_downtime
+  FOREIGN KEY host (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE,
+  CONSTRAINT icinga_scheduled_downtime_inheritance_parent_downtime
+  FOREIGN KEY host (parent_scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE icinga_scheduled_downtime_range (
+  scheduled_downtime_id INT(10) UNSIGNED AUTO_INCREMENT NOT NULL,
+  range_key VARCHAR(255) NOT NULL COMMENT 'monday, ...',
+  range_value VARCHAR(255) NOT NULL COMMENT '00:00-24:00, ...',
+  range_type ENUM('include', 'exclude') NOT NULL DEFAULT 'include'
+  COMMENT 'include -> ranges {}, exclude ranges_ignore {} - not yet',
+  merge_behaviour ENUM('set', 'add', 'substract') NOT NULL DEFAULT 'set'
+  COMMENT 'set -> = {}, add -> += {}, substract -> -= {}',
+  PRIMARY KEY (scheduled_downtime_id, range_type, range_key),
+  CONSTRAINT icinga_scheduled_downtime_range_downtime
+  FOREIGN KEY scheduled_downtime (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (161, NOW());
diff --git a/schema/mysql.sql b/schema/mysql.sql
index 4b6f7e0b..1cdc064b 100644
--- a/schema/mysql.sql
+++ b/schema/mysql.sql
@@ -1786,6 +1786,61 @@ CREATE TABLE icinga_timeperiod_exclude (
     ON UPDATE CASCADE
 );
 
+CREATE TABLE icinga_scheduled_downtime (
+  id INT(10) UNSIGNED AUTO_INCREMENT NOT NULL,
+  object_name VARCHAR(255) NOT NULL,
+  zone_id INT(10) UNSIGNED DEFAULT NULL,
+  object_type ENUM('object', 'template', 'apply') NOT NULL,
+  disabled ENUM('y', 'n') NOT NULL DEFAULT 'n',
+  apply_to ENUM('host', 'service') DEFAULT NULL,
+  assign_filter TEXT DEFAULT NULL,
+  author VARCHAR(255) DEFAULT NULL,
+  comment TEXT DEFAULT NULL,
+  fixed ENUM('y', 'n') DEFAULT NULL,
+  duration INT(10) UNSIGNED DEFAULT NULL,
+  PRIMARY KEY (id),
+  UNIQUE INDEX object_name (object_name),
+  CONSTRAINT icinga_scheduled_downtime_zone
+  FOREIGN KEY zone (zone_id)
+  REFERENCES icinga_zone (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE icinga_scheduled_downtime_inheritance (
+  scheduled_downtime_id INT(10) UNSIGNED NOT NULL,
+  parent_scheduled_downtime_id INT(10) UNSIGNED NOT NULL,
+  weight MEDIUMINT UNSIGNED DEFAULT NULL,
+  PRIMARY KEY (scheduled_downtime_id, parent_scheduled_downtime_id),
+  UNIQUE KEY unique_order (scheduled_downtime_id, weight),
+  CONSTRAINT icinga_scheduled_downtime_inheritance_downtime
+  FOREIGN KEY host (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE,
+  CONSTRAINT icinga_scheduled_downtime_inheritance_parent_downtime
+  FOREIGN KEY host (parent_scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE icinga_scheduled_downtime_range (
+  scheduled_downtime_id INT(10) UNSIGNED AUTO_INCREMENT NOT NULL,
+  range_key VARCHAR(255) NOT NULL COMMENT 'monday, ...',
+  range_value VARCHAR(255) NOT NULL COMMENT '00:00-24:00, ...',
+  range_type ENUM('include', 'exclude') NOT NULL DEFAULT 'include'
+  COMMENT 'include -> ranges {}, exclude ranges_ignore {} - not yet',
+  merge_behaviour ENUM('set', 'add', 'substract') NOT NULL DEFAULT 'set'
+  COMMENT 'set -> = {}, add -> += {}, substract -> -= {}',
+  PRIMARY KEY (scheduled_downtime_id, range_type, range_key),
+  CONSTRAINT icinga_scheduled_downtime_range_downtime
+  FOREIGN KEY scheduled_downtime (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (160, NOW());
+  VALUES (161, NOW());
diff --git a/schema/pgsql-migrations/upgrade_161.sql b/schema/pgsql-migrations/upgrade_161.sql
new file mode 100644
index 00000000..b8618d97
--- /dev/null
+++ b/schema/pgsql-migrations/upgrade_161.sql
@@ -0,0 +1,70 @@
+CREATE TABLE icinga_scheduled_downtime (
+  id serial,
+  object_name character varying(255) NOT NULL,
+  zone_id integer DEFAULT NULL,
+  object_type enum_object_type_all NOT NULL,
+  disabled enum_boolean NOT NULL DEFAULT 'n',
+  apply_to enum_host_service NULL DEFAULT NULL,
+  assign_filter text DEFAULT NULL,
+  author character varying(255) DEFAULT NULL,
+  comment text DEFAULT NULL,
+  fixed enum_boolean DEFAULT NULL,
+  duration int DEFAULT NULL,
+  PRIMARY KEY (id),
+  CONSTRAINT icinga_scheduled_downtime_zone
+  FOREIGN KEY (zone_id)
+  REFERENCES icinga_zone (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX scheduled_downtime_object_name ON icinga_scheduled_downtime (object_name);
+CREATE INDEX scheduled_downtime_zone ON icinga_scheduled_downtime (zone_id);
+
+
+CREATE TABLE icinga_scheduled_downtime_inheritance (
+  scheduled_downtime_id integer NOT NULL,
+  parent_scheduled_downtime_id integer NOT NULL,
+  weight integer DEFAULT NULL,
+  PRIMARY KEY (scheduled_downtime_id, parent_scheduled_downtime_id),
+  CONSTRAINT icinga_scheduled_downtime_inheritance_scheduled_downtime
+  FOREIGN KEY (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE,
+  CONSTRAINT icinga_scheduled_downtime_inheritance_parent_scheduled_downtime
+  FOREIGN KEY (parent_scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX scheduled_downtime_inheritance_unique_order ON icinga_scheduled_downtime_inheritance (scheduled_downtime_id, weight);
+CREATE INDEX scheduled_downtime_inheritance_scheduled_downtime ON icinga_scheduled_downtime_inheritance (scheduled_downtime_id);
+CREATE INDEX scheduled_downtime_inheritance_scheduled_downtime_parent ON icinga_scheduled_downtime_inheritance (parent_scheduled_downtime_id);
+
+
+CREATE TABLE icinga_scheduled_downtime_range (
+  scheduled_downtime_id serial,
+  range_key character varying(255) NOT NULL,
+  range_value character varying(255) NOT NULL,
+  range_type enum_timeperiod_range_type NOT NULL DEFAULT 'include',
+  merge_behaviour enum_merge_behaviour NOT NULL DEFAULT 'set',
+  PRIMARY KEY (scheduled_downtime_id, range_type, range_key),
+  CONSTRAINT icinga_scheduled_downtime_range_scheduled_downtime
+  FOREIGN KEY (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE
+);
+
+CREATE INDEX scheduled_downtime_range_scheduled_downtime ON icinga_scheduled_downtime_range (scheduled_downtime_id);
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_key IS 'monday, ...';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_value IS '00:00-24:00, ...';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_type IS 'include -> ranges {}, exclude ranges_ignore {} - not yet';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.merge_behaviour IS 'set -> = {}, add -> += {}, substract -> -= {}';
+
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (161, NOW());
diff --git a/schema/pgsql.sql b/schema/pgsql.sql
index 09cb381e..c3073948 100644
--- a/schema/pgsql.sql
+++ b/schema/pgsql.sql
@@ -2085,6 +2085,74 @@ CREATE TABLE icinga_timeperiod_exclude (
   ON UPDATE CASCADE
 );
 
+
+CREATE TABLE icinga_scheduled_downtime (
+  id serial,
+  object_name character varying(255) NOT NULL,
+  zone_id integer DEFAULT NULL,
+  object_type enum_object_type_all NOT NULL,
+  disabled enum_boolean NOT NULL DEFAULT 'n',
+  apply_to enum_host_service NULL DEFAULT NULL,
+  assign_filter text DEFAULT NULL,
+  author character varying(255) DEFAULT NULL,
+  comment text DEFAULT NULL,
+  fixed enum_boolean DEFAULT NULL,
+  duration int DEFAULT NULL,
+  PRIMARY KEY (id),
+  CONSTRAINT icinga_scheduled_downtime_zone
+  FOREIGN KEY (zone_id)
+  REFERENCES icinga_zone (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX scheduled_downtime_object_name ON icinga_scheduled_downtime (object_name);
+CREATE INDEX scheduled_downtime_zone ON icinga_scheduled_downtime (zone_id);
+
+
+CREATE TABLE icinga_scheduled_downtime_inheritance (
+  scheduled_downtime_id integer NOT NULL,
+  parent_scheduled_downtime_id integer NOT NULL,
+  weight integer DEFAULT NULL,
+  PRIMARY KEY (scheduled_downtime_id, parent_scheduled_downtime_id),
+  CONSTRAINT icinga_scheduled_downtime_inheritance_scheduled_downtime
+  FOREIGN KEY (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE,
+  CONSTRAINT icinga_scheduled_downtime_inheritance_parent_scheduled_downtime
+  FOREIGN KEY (parent_scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE RESTRICT
+    ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX scheduled_downtime_inheritance_unique_order ON icinga_scheduled_downtime_inheritance (scheduled_downtime_id, weight);
+CREATE INDEX scheduled_downtime_inheritance_scheduled_downtime ON icinga_scheduled_downtime_inheritance (scheduled_downtime_id);
+CREATE INDEX scheduled_downtime_inheritance_scheduled_downtime_parent ON icinga_scheduled_downtime_inheritance (parent_scheduled_downtime_id);
+
+
+CREATE TABLE icinga_scheduled_downtime_range (
+  scheduled_downtime_id serial,
+  range_key character varying(255) NOT NULL,
+  range_value character varying(255) NOT NULL,
+  range_type enum_timeperiod_range_type NOT NULL DEFAULT 'include',
+  merge_behaviour enum_merge_behaviour NOT NULL DEFAULT 'set',
+  PRIMARY KEY (scheduled_downtime_id, range_type, range_key),
+  CONSTRAINT icinga_scheduled_downtime_range_scheduled_downtime
+  FOREIGN KEY (scheduled_downtime_id)
+  REFERENCES icinga_scheduled_downtime (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE
+);
+
+CREATE INDEX scheduled_downtime_range_scheduled_downtime ON icinga_scheduled_downtime_range (scheduled_downtime_id);
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_key IS 'monday, ...';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_value IS '00:00-24:00, ...';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.range_type IS 'include -> ranges {}, exclude ranges_ignore {} - not yet';
+COMMENT ON COLUMN icinga_scheduled_downtime_range.merge_behaviour IS 'set -> = {}, add -> += {}, substract -> -= {}';
+
+
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (160, NOW());
+  VALUES (161, NOW());