diff --git a/resources/sql/autopatches/20150428.calendar.1.iscancelled.sql b/resources/sql/autopatches/20150428.calendar.1.iscancelled.sql
new file mode 100644
index 0000000000..8b6d95dd67
--- /dev/null
+++ b/resources/sql/autopatches/20150428.calendar.1.iscancelled.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_calendar.calendar_event
+    ADD isCancelled BOOL NOT NULL;
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 218487e23a..a64cae8f8f 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1482,7 +1482,7 @@ phutil_register_library_map(array(
     'PhabricatorCalendarController' => 'applications/calendar/controller/PhabricatorCalendarController.php',
     'PhabricatorCalendarDAO' => 'applications/calendar/storage/PhabricatorCalendarDAO.php',
     'PhabricatorCalendarEvent' => 'applications/calendar/storage/PhabricatorCalendarEvent.php',
-    'PhabricatorCalendarEventDeleteController' => 'applications/calendar/controller/PhabricatorCalendarEventDeleteController.php',
+    'PhabricatorCalendarEventCancelController' => 'applications/calendar/controller/PhabricatorCalendarEventCancelController.php',
     'PhabricatorCalendarEventEditController' => 'applications/calendar/controller/PhabricatorCalendarEventEditController.php',
     'PhabricatorCalendarEventEditor' => 'applications/calendar/editor/PhabricatorCalendarEventEditor.php',
     'PhabricatorCalendarEventInvalidEpochException' => 'applications/calendar/exception/PhabricatorCalendarEventInvalidEpochException.php',
@@ -4808,8 +4808,12 @@ phutil_register_library_map(array(
       'PhabricatorMarkupInterface',
       'PhabricatorApplicationTransactionInterface',
       'PhabricatorSubscribableInterface',
+      'PhabricatorTokenReceiverInterface',
+      'PhabricatorDestructibleInterface',
+      'PhabricatorMentionableInterface',
+      'PhabricatorFlaggableInterface',
     ),
-    'PhabricatorCalendarEventDeleteController' => 'PhabricatorCalendarController',
+    'PhabricatorCalendarEventCancelController' => 'PhabricatorCalendarController',
     'PhabricatorCalendarEventEditController' => 'PhabricatorCalendarController',
     'PhabricatorCalendarEventEditor' => 'PhabricatorApplicationTransactionEditor',
     'PhabricatorCalendarEventInvalidEpochException' => 'Exception',
diff --git a/src/applications/calendar/application/PhabricatorCalendarApplication.php b/src/applications/calendar/application/PhabricatorCalendarApplication.php
index 2eeb4f0fbe..629c7f59e2 100644
--- a/src/applications/calendar/application/PhabricatorCalendarApplication.php
+++ b/src/applications/calendar/application/PhabricatorCalendarApplication.php
@@ -51,8 +51,8 @@ final class PhabricatorCalendarApplication extends PhabricatorApplication {
             => 'PhabricatorCalendarEventEditController',
           'edit/(?P<id>[1-9]\d*)/'
             => 'PhabricatorCalendarEventEditController',
-          'delete/(?P<id>[1-9]\d*)/'
-            => 'PhabricatorCalendarEventDeleteController',
+          'cancel/(?P<id>[1-9]\d*)/'
+            => 'PhabricatorCalendarEventCancelController',
         ),
       ),
     );
diff --git a/src/applications/calendar/controller/PhabricatorCalendarEventCancelController.php b/src/applications/calendar/controller/PhabricatorCalendarEventCancelController.php
new file mode 100644
index 0000000000..a3909e7207
--- /dev/null
+++ b/src/applications/calendar/controller/PhabricatorCalendarEventCancelController.php
@@ -0,0 +1,75 @@
+<?php
+
+final class PhabricatorCalendarEventCancelController
+  extends PhabricatorCalendarController {
+
+  private $id;
+
+  public function willProcessRequest(array $data) {
+    $this->id = idx($data, 'id');
+  }
+
+  public function processRequest() {
+    $request  = $this->getRequest();
+    $user     = $request->getUser();
+
+    $status = id(new PhabricatorCalendarEventQuery())
+      ->setViewer($user)
+      ->withIDs(array($this->id))
+      ->requireCapabilities(
+        array(
+          PhabricatorPolicyCapability::CAN_VIEW,
+          PhabricatorPolicyCapability::CAN_EDIT,
+        ))
+      ->executeOne();
+
+    if (!$status) {
+      return new Aphront404Response();
+    }
+
+    $cancel_uri = '/E'.$status->getID();
+    $validation_exception = null;
+    $is_cancelled = $status->getIsCancelled();
+
+    if ($request->isFormPost()) {
+      $xactions = array();
+
+      $xaction = id(new PhabricatorCalendarEventTransaction())
+        ->setTransactionType(
+          PhabricatorCalendarEventTransaction::TYPE_CANCEL)
+        ->setNewValue(!$is_cancelled);
+
+      $editor = id(new PhabricatorCalendarEventEditor())
+        ->setActor($user)
+        ->setContentSourceFromRequest($request)
+        ->setContinueOnNoEffect(true)
+        ->setContinueOnMissingFields(true);
+
+      try {
+        $editor->applyTransactions($status, array($xaction));
+        return id(new AphrontRedirectResponse())->setURI($cancel_uri);
+      } catch (PhabricatorApplicationTransactionValidationException $ex) {
+        $validation_exception = $ex;
+      }
+    }
+
+    if ($is_cancelled) {
+      $title = pht('Reinstate Event');
+      $paragraph = pht('Reinstate this event?');
+      $cancel = pht('Don\'t Reinstate Event');
+      $submit = pht('Reinstate Event');
+    } else {
+      $title = pht('Cancel Event');
+      $paragraph = pht('You can always reinstate the event later.');
+      $cancel = pht('Don\'t Cancel Event');
+      $submit = pht('Cancel Event');
+    }
+
+    return $this->newDialog()
+      ->setTitle($title)
+      ->setValidationException($validation_exception)
+      ->appendParagraph($paragraph)
+      ->addCancelButton($cancel_uri, $cancel)
+      ->addSubmitButton($submit);
+  }
+}
diff --git a/src/applications/calendar/controller/PhabricatorCalendarEventDeleteController.php b/src/applications/calendar/controller/PhabricatorCalendarEventDeleteController.php
deleted file mode 100644
index a482f4e86b..0000000000
--- a/src/applications/calendar/controller/PhabricatorCalendarEventDeleteController.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-final class PhabricatorCalendarEventDeleteController
-  extends PhabricatorCalendarController {
-
-  private $id;
-
-  public function willProcessRequest(array $data) {
-    $this->id = idx($data, 'id');
-  }
-
-  public function processRequest() {
-    $request  = $this->getRequest();
-    $user     = $request->getUser();
-
-    $status = id(new PhabricatorCalendarEventQuery())
-      ->setViewer($user)
-      ->withIDs(array($this->id))
-      ->requireCapabilities(
-        array(
-          PhabricatorPolicyCapability::CAN_VIEW,
-          PhabricatorPolicyCapability::CAN_EDIT,
-        ))
-      ->executeOne();
-
-    if (!$status) {
-      return new Aphront404Response();
-    }
-
-    if ($request->isFormPost()) {
-      $status->delete();
-      $uri = new PhutilURI($this->getApplicationURI());
-      $uri->setQueryParams(
-        array(
-          'deleted' => true,
-        ));
-      return id(new AphrontRedirectResponse())
-        ->setURI($uri);
-    }
-
-    $dialog = new AphrontDialogView();
-    $dialog->setUser($user);
-    $dialog->setTitle(pht('Really delete status?'));
-    $dialog->appendChild(
-      pht('Permanently delete this status? This action can not be undone.'));
-    $dialog->addSubmitButton(pht('Delete'));
-    $dialog->addCancelButton(
-      $this->getApplicationURI('event/'));
-
-    return id(new AphrontDialogResponse())->setDialog($dialog);
-
-  }
-
-}
diff --git a/src/applications/calendar/controller/PhabricatorCalendarEventEditController.php b/src/applications/calendar/controller/PhabricatorCalendarEventEditController.php
index 2b215ccf1e..9580296b1f 100644
--- a/src/applications/calendar/controller/PhabricatorCalendarEventEditController.php
+++ b/src/applications/calendar/controller/PhabricatorCalendarEventEditController.php
@@ -19,7 +19,6 @@ final class PhabricatorCalendarEventEditController
     $error_name = true;
     $validation_exception = null;
 
-
     $start_time = id(new AphrontFormDateControl())
       ->setUser($user)
       ->setName('start')
diff --git a/src/applications/calendar/controller/PhabricatorCalendarEventViewController.php b/src/applications/calendar/controller/PhabricatorCalendarEventViewController.php
index e4b2cfcdb2..9214ff2cd0 100644
--- a/src/applications/calendar/controller/PhabricatorCalendarEventViewController.php
+++ b/src/applications/calendar/controller/PhabricatorCalendarEventViewController.php
@@ -56,16 +56,22 @@ final class PhabricatorCalendarEventViewController
 
   private function buildHeaderView(PhabricatorCalendarEvent $event) {
     $viewer = $this->getRequest()->getUser();
+    $is_cancelled = $event->getIsCancelled();
+    $icon = $is_cancelled ? ('fa-times') : ('fa-calendar');
+    $color = $is_cancelled ? ('grey') : ('green');
+    $status = $is_cancelled ? ('Cancelled') : ('Active');
 
     return id(new PHUIHeaderView())
       ->setUser($viewer)
       ->setHeader($event->getName())
+      ->setStatus($icon, $color, $status)
       ->setPolicyObject($event);
   }
 
   private function buildActionView(PhabricatorCalendarEvent $event) {
     $viewer = $this->getRequest()->getUser();
     $id = $event->getID();
+    $is_cancelled = $event->getIsCancelled();
 
     $actions = id(new PhabricatorActionListView())
       ->setObjectURI($this->getApplicationURI('event/'.$id.'/'))
@@ -85,13 +91,23 @@ final class PhabricatorCalendarEventViewController
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit));
 
-    $actions->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Cancel Event'))
-        ->setIcon('fa-times')
-        ->setHref($this->getApplicationURI("event/delete/{$id}/"))
-        ->setDisabled(!$can_edit)
-        ->setWorkflow(true));
+    if ($is_cancelled) {
+      $actions->addAction(
+        id(new PhabricatorActionView())
+          ->setName(pht('Reinstate Event'))
+          ->setIcon('fa-plus')
+          ->setHref($this->getApplicationURI("event/cancel/{$id}/"))
+          ->setDisabled(!$can_edit)
+          ->setWorkflow(true));
+    } else {
+      $actions->addAction(
+        id(new PhabricatorActionView())
+          ->setName(pht('Cancel Event'))
+          ->setIcon('fa-times')
+          ->setHref($this->getApplicationURI("event/cancel/{$id}/"))
+          ->setDisabled(!$can_edit)
+          ->setWorkflow(true));
+    }
 
     return $actions;
   }
diff --git a/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php b/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
index 6dfed29666..b268738f27 100644
--- a/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
+++ b/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
@@ -19,6 +19,7 @@ final class PhabricatorCalendarEventEditor
     $types[] = PhabricatorCalendarEventTransaction::TYPE_END_DATE;
     $types[] = PhabricatorCalendarEventTransaction::TYPE_STATUS;
     $types[] = PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION;
+    $types[] = PhabricatorCalendarEventTransaction::TYPE_CANCEL;
 
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
@@ -44,6 +45,8 @@ final class PhabricatorCalendarEventEditor
         return (int)$status;
       case PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION:
         return $object->getDescription();
+      case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
+        return $object->getIsCancelled();
     }
 
     return parent::getCustomTransactionOldValue($object, $xaction);
@@ -58,6 +61,7 @@ final class PhabricatorCalendarEventEditor
       case PhabricatorCalendarEventTransaction::TYPE_START_DATE:
       case PhabricatorCalendarEventTransaction::TYPE_END_DATE:
       case PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION:
+      case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
         return $xaction->getNewValue();
       case PhabricatorCalendarEventTransaction::TYPE_STATUS:
         return (int)$xaction->getNewValue();
@@ -86,6 +90,9 @@ final class PhabricatorCalendarEventEditor
       case PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION:
         $object->setDescription($xaction->getNewValue());
         return;
+      case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
+        $object->setIsCancelled((int)$xaction->getNewValue());
+        return;
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_EDGE:
@@ -106,6 +113,7 @@ final class PhabricatorCalendarEventEditor
       case PhabricatorCalendarEventTransaction::TYPE_END_DATE:
       case PhabricatorCalendarEventTransaction::TYPE_STATUS:
       case PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION:
+      case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_EDGE:
diff --git a/src/applications/calendar/phid/PhabricatorCalendarEventPHIDType.php b/src/applications/calendar/phid/PhabricatorCalendarEventPHIDType.php
index a2318465ed..6bf48e817d 100644
--- a/src/applications/calendar/phid/PhabricatorCalendarEventPHIDType.php
+++ b/src/applications/calendar/phid/PhabricatorCalendarEventPHIDType.php
@@ -30,11 +30,16 @@ final class PhabricatorCalendarEventPHIDType extends PhabricatorPHIDType {
 
       $id = $event->getID();
       $name = $event->getName();
+      $is_cancelled = $event->getIsCancelled();
 
       $handle
         ->setName($name)
         ->setFullName(pht('E%d: %s', $id, $name))
         ->setURI('/E'.$id);
+
+      if ($is_cancelled) {
+        $handle->setStatus(PhabricatorObjectHandleStatus::STATUS_CLOSED);
+      }
     }
   }
 
diff --git a/src/applications/calendar/query/PhabricatorCalendarEventQuery.php b/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
index cdfeb0ca43..44ebc127aa 100644
--- a/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
+++ b/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
@@ -9,6 +9,7 @@ final class PhabricatorCalendarEventQuery
   private $rangeEnd;
   private $invitedPHIDs;
   private $creatorPHIDs;
+  private $isCancelled;
 
   public function withIDs(array $ids) {
     $this->ids = $ids;
@@ -36,6 +37,11 @@ final class PhabricatorCalendarEventQuery
     return $this;
   }
 
+  public function withIsCancelled($is_cancelled) {
+    $this->isCancelled = $is_cancelled;
+    return $this;
+  }
+
   protected function loadPage() {
     $table = new PhabricatorCalendarEvent();
     $conn_r = $table->establishConnection('r');
@@ -99,6 +105,13 @@ final class PhabricatorCalendarEventQuery
         $this->creatorPHIDs);
     }
 
+    if ($this->isCancelled !== null) {
+      $where[] = qsprintf(
+        $conn_r,
+        'isCancelled = %d',
+        (int)$this->isCancelled);
+    }
+
     $where[] = $this->buildPagingClause($conn_r);
 
     return $this->formatWhereClause($where);
diff --git a/src/applications/calendar/query/PhabricatorCalendarEventSearchEngine.php b/src/applications/calendar/query/PhabricatorCalendarEventSearchEngine.php
index 820cd3d621..c7409f3a04 100644
--- a/src/applications/calendar/query/PhabricatorCalendarEventSearchEngine.php
+++ b/src/applications/calendar/query/PhabricatorCalendarEventSearchEngine.php
@@ -34,6 +34,10 @@ final class PhabricatorCalendarEventSearchEngine
       'creatorPHIDs',
       $this->readUsersFromRequest($request, 'creators'));
 
+    $saved->setParameter(
+      'isCancelled',
+      $request->getStr('isCancelled'));
+
     return $saved;
   }
 
@@ -73,6 +77,16 @@ final class PhabricatorCalendarEventSearchEngine
       $query->withCreatorPHIDs($creator_phids);
     }
 
+    $is_cancelled = $saved->getParameter('isCancelled');
+    switch ($is_cancelled) {
+      case 'active':
+        $query->withIsCancelled(false);
+        break;
+      case 'cancelled':
+        $query->withIsCancelled(true);
+        break;
+    }
+
     return $query;
   }
 
@@ -83,9 +97,15 @@ final class PhabricatorCalendarEventSearchEngine
     $range_start = $saved->getParameter('rangeStart');
     $range_end = $saved->getParameter('rangeEnd');
     $upcoming = $saved->getParameter('upcoming');
+    $is_cancelled = $saved->getParameter('isCancelled', 'active');
 
     $invited_phids = $saved->getParameter('invitedPHIDs', array());
     $creator_phids = $saved->getParameter('creatorPHIDs', array());
+    $resolution_types = array(
+      'active' => pht('Active Events Only'),
+      'cancelled' => pht('Cancelled Events Only'),
+      'both' => pht('Both Cancelled and Active Events'),
+    );
 
     $form
       ->appendControl(
@@ -120,7 +140,13 @@ final class PhabricatorCalendarEventSearchEngine
             'upcoming',
             1,
             pht('Show only upcoming events.'),
-            $upcoming));
+            $upcoming))
+      ->appendChild(
+        id(new AphrontFormSelectControl())
+          ->setLabel(pht('Cancelled Events'))
+          ->setName('isCancelled')
+          ->setValue($is_cancelled)
+          ->setOptions($resolution_types));
   }
 
   protected function getURI($path) {
diff --git a/src/applications/calendar/storage/PhabricatorCalendarEvent.php b/src/applications/calendar/storage/PhabricatorCalendarEvent.php
index 4cb5996b02..b6a31f0325 100644
--- a/src/applications/calendar/storage/PhabricatorCalendarEvent.php
+++ b/src/applications/calendar/storage/PhabricatorCalendarEvent.php
@@ -6,6 +6,7 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
   PhabricatorApplicationTransactionInterface,
   PhabricatorSubscribableInterface,
   PhabricatorTokenReceiverInterface,
+  PhabricatorDestructibleInterface,
   PhabricatorMentionableInterface,
   PhabricatorFlaggableInterface {
 
@@ -15,6 +16,7 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
   protected $dateTo;
   protected $status;
   protected $description;
+  protected $isCancelled;
 
   const STATUS_AWAY = 1;
   const STATUS_SPORADIC = 2;
@@ -26,7 +28,8 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
       ->executeOne();
 
     return id(new PhabricatorCalendarEvent())
-      ->setUserPHID($actor->getPHID());
+      ->setUserPHID($actor->getPHID())
+      ->setIsCancelled(0);
   }
 
   private static $statusTexts = array(
@@ -64,6 +67,7 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
         'dateTo' => 'epoch',
         'status' => 'uint32',
         'description' => 'text',
+        'isCancelled' => 'bool',
       ),
       self::CONFIG_KEY_SCHEMA => array(
         'userPHID_dateFrom' => array(
@@ -244,4 +248,15 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
   public function getUsersToNotifyOfTokenGiven() {
     return array($this->getUserPHID());
   }
+
+/* -(  PhabricatorDestructibleInterface  )----------------------------------- */
+
+
+  public function destroyObjectPermanently(
+    PhabricatorDestructionEngine $engine) {
+
+    $this->openTransaction();
+    $this->delete();
+    $this->saveTransaction();
+  }
 }
diff --git a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
index 4d6df565ee..4d3b7c5ffa 100644
--- a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
+++ b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
@@ -8,6 +8,7 @@ final class PhabricatorCalendarEventTransaction
   const TYPE_END_DATE = 'calendar.enddate';
   const TYPE_STATUS = 'calendar.status';
   const TYPE_DESCRIPTION = 'calendar.description';
+  const TYPE_CANCEL = 'calendar.cancel';
 
   const MAILTAG_CONTENT = 'calendar-content';
   const MAILTAG_OTHER = 'calendar-other';
@@ -33,6 +34,7 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
+      case self::TYPE_CANCEL:
         $phids[] = $this->getObjectPHID();
         break;
     }
@@ -47,6 +49,7 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
+      case self::TYPE_CANCEL:
         return ($old === null);
     }
     return parent::shouldHide();
@@ -59,6 +62,7 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
+      case self::TYPE_CANCEL:
         return 'fa-pencil';
         break;
     }
@@ -115,6 +119,18 @@ final class PhabricatorCalendarEventTransaction
           "%s updated the event's description.",
           $this->renderHandleLink($author_phid));
         break;
+      case self::TYPE_CANCEL:
+        if ($new) {
+          return pht(
+            '%s cancelled this event.',
+            $this->renderHandleLink($author_phid));
+          break;
+        } else {
+          return pht(
+            '%s reinstated this event.',
+            $this->renderHandleLink($author_phid));
+          break;
+        }
     }
 
     return parent::getTitle();
@@ -186,6 +202,20 @@ final class PhabricatorCalendarEventTransaction
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid));
         break;
+      case self::TYPE_CANCEL:
+        if ($new) {
+          return pht(
+            '%s cancelled %s.',
+            $this->renderHandleLink($author_phid),
+            $this->renderHandleLink($object_phid));
+          break;
+        } else {
+          return pht(
+            '%s reinstated %s.',
+            $this->renderHandleLink($author_phid),
+            $this->renderHandleLink($object_phid));
+          break;
+        }
     }
 
     return parent::getTitleForFeed();
@@ -201,6 +231,7 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
+      case self::TYPE_CANCEL:
         return PhabricatorTransactions::COLOR_GREEN;
     }
 
@@ -250,6 +281,9 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_DESCRIPTION:
         $tags[] = self::MAILTAG_CONTENT;
         break;
+      case self::TYPE_CANCEL:
+        $tags[] = self::MAILTAG_CONTENT;
+        break;
     }
     return $tags;
   }