diff --git a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
index ef61e5b1e8..d3e7a25efd 100644
--- a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
+++ b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
@@ -1,464 +1,486 @@
 <?php
 
 final class PhabricatorCalendarEventTransaction
   extends PhabricatorApplicationTransaction {
 
   const TYPE_NAME = 'calendar.name';
   const TYPE_START_DATE = 'calendar.startdate';
   const TYPE_END_DATE = 'calendar.enddate';
   const TYPE_STATUS = 'calendar.status';
   const TYPE_DESCRIPTION = 'calendar.description';
   const TYPE_CANCEL = 'calendar.cancel';
   const TYPE_ALL_DAY = 'calendar.allday';
   const TYPE_INVITE = 'calendar.invite';
 
   const MAILTAG_RESCHEDULE = 'calendar-reschedule';
   const MAILTAG_CONTENT = 'calendar-content';
   const MAILTAG_OTHER = 'calendar-other';
 
   public function getApplicationName() {
     return 'calendar';
   }
 
   public function getApplicationTransactionType() {
     return PhabricatorCalendarEventPHIDType::TYPECONST;
   }
 
   public function getApplicationTransactionCommentObject() {
     return new PhabricatorCalendarEventTransactionComment();
   }
 
   public function getRequiredHandlePHIDs() {
     $phids = parent::getRequiredHandlePHIDs();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_NAME:
       case self::TYPE_START_DATE:
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_CANCEL:
       case self::TYPE_ALL_DAY:
         $phids[] = $this->getObjectPHID();
         break;
       case self::TYPE_INVITE:
         $new = $this->getNewValue();
         foreach ($new as $phid => $status) {
           $phids[] = $phid;
         }
         break;
     }
 
     return $phids;
   }
 
   public function shouldHide() {
     $old = $this->getOldValue();
     switch ($this->getTransactionType()) {
       case self::TYPE_START_DATE:
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_CANCEL:
       case self::TYPE_ALL_DAY:
       case self::TYPE_INVITE:
         return ($old === null);
     }
     return parent::shouldHide();
   }
 
   public function getIcon() {
     switch ($this->getTransactionType()) {
       case self::TYPE_NAME:
       case self::TYPE_START_DATE:
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_ALL_DAY:
       case self::TYPE_CANCEL:
         return 'fa-pencil';
         break;
       case self::TYPE_INVITE:
         return 'fa-user-plus';
         break;
     }
     return parent::getIcon();
   }
 
   public function getTitle() {
     $author_phid = $this->getAuthorPHID();
     $object_phid = $this->getObjectPHID();
 
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     $type = $this->getTransactionType();
     switch ($type) {
       case self::TYPE_NAME:
         if ($old === null) {
           return pht(
             '%s created this event.',
             $this->renderHandleLink($author_phid));
         } else {
           return pht(
             '%s changed the name of this event from %s to %s.',
             $this->renderHandleLink($author_phid),
             $old,
             $new);
         }
       case self::TYPE_START_DATE:
         if ($old) {
           return pht(
             '%s edited the start date of this event.',
             $this->renderHandleLink($author_phid));
         }
         break;
       case self::TYPE_END_DATE:
         if ($old) {
           return pht(
             '%s edited the end date of this event.',
             $this->renderHandleLink($author_phid));
         }
         break;
       case self::TYPE_STATUS:
         $old_name = PhabricatorCalendarEvent::getNameForStatus($old);
         $new_name = PhabricatorCalendarEvent::getNameForStatus($new);
         return pht(
           '%s updated the event status from %s to %s.',
           $this->renderHandleLink($author_phid),
           $old_name,
           $new_name);
       case self::TYPE_DESCRIPTION:
         return pht(
           "%s updated the event's description.",
           $this->renderHandleLink($author_phid));
+      case self::TYPE_ALL_DAY:
+        if ($new) {
+          return pht(
+            '%s made this an all day event.',
+            $this->renderHandleLink($author_phid));
+        } else {
+          return pht(
+            '%s converted this from an all day event.',
+            $this->renderHandleLink($author_phid));
+        }
       case self::TYPE_CANCEL:
         if ($new) {
           return pht(
             '%s cancelled this event.',
             $this->renderHandleLink($author_phid));
         } else {
           return pht(
             '%s reinstated this event.',
             $this->renderHandleLink($author_phid));
         }
       case self::TYPE_INVITE:
         $text = null;
 
         if (count($old) === 1
           && count($new) === 1
           && isset($old[$author_phid])) {
           // user joined/declined/accepted event themself
           $old_status = $old[$author_phid];
           $new_status = $new[$author_phid];
 
           if ($old_status !== $new_status) {
             switch ($new_status) {
               case PhabricatorCalendarEventInvitee::STATUS_INVITED:
                 $text = pht(
                   '%s has joined this event.',
                   $this->renderHandleLink($author_phid));
                   break;
               case PhabricatorCalendarEventInvitee::STATUS_ATTENDING:
                 $text = pht(
                   '%s is attending this event.',
                   $this->renderHandleLink($author_phid));
                   break;
               case PhabricatorCalendarEventInvitee::STATUS_DECLINED:
               case PhabricatorCalendarEventInvitee::STATUS_UNINVITED:
                 $text = pht(
                   '%s has declined this event.',
                   $this->renderHandleLink($author_phid));
                   break;
               default:
                 $text = pht(
                   '%s has changed their status for this event.',
                   $this->renderHandleLink($author_phid));
                 break;
             }
           }
         } else {
           // user changed status for many users
           $self_joined = null;
           $self_declined = null;
           $added = array();
           $uninvited = array();
 
           foreach ($new as $phid => $status) {
             if ($status == PhabricatorCalendarEventInvitee::STATUS_INVITED
               || $status == PhabricatorCalendarEventInvitee::STATUS_ATTENDING) {
               // added users
               $added[] = $phid;
             } else if (
               $status == PhabricatorCalendarEventInvitee::STATUS_DECLINED
               || $status == PhabricatorCalendarEventInvitee::STATUS_UNINVITED) {
               $uninvited[] = $phid;
             }
           }
 
           $count_added = count($added);
           $count_uninvited = count($uninvited);
           $added_text = null;
           $uninvited_text = null;
 
           if ($count_added > 0 && $count_uninvited == 0) {
             $added_text = $this->renderHandleList($added);
             $text = pht('%s invited %s.',
               $this->renderHandleLink($author_phid),
               $added_text);
           } else if ($count_added > 0 && $count_uninvited > 0) {
             $added_text = $this->renderHandleList($added);
             $uninvited_text = $this->renderHandleList($uninvited);
             $text = pht('%s invited %s and uninvited: %s',
               $this->renderHandleLink($author_phid),
               $added_text,
               $uninvited_text);
           } else if ($count_added == 0 && $count_uninvited > 0) {
             $uninvited_text = $this->renderHandleList($uninvited);
             $text = pht('%s uninvited %s.',
               $this->renderHandleLink($author_phid),
               $uninvited_text);
           } else {
             $text = pht('%s updated the invitee list.',
               $this->renderHandleLink($author_phid));
           }
         }
         return $text;
     }
     return parent::getTitle();
   }
 
   public function getTitleForFeed() {
     $author_phid = $this->getAuthorPHID();
     $object_phid = $this->getObjectPHID();
 
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     $viewer = $this->getViewer();
 
     $type = $this->getTransactionType();
     switch ($type) {
       case self::TYPE_NAME:
         if ($old === null) {
           return pht(
             '%s created %s',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         } else {
           return pht(
             '%s changed the name of %s from %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old,
             $new);
         }
       case self::TYPE_START_DATE:
         if ($old) {
           $old = phabricator_datetime($old, $viewer);
           $new = phabricator_datetime($new, $viewer);
           return pht(
             '%s changed the start date of %s from %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old,
             $new);
         }
         break;
       case self::TYPE_END_DATE:
         if ($old) {
           $old = phabricator_datetime($old, $viewer);
           $new = phabricator_datetime($new, $viewer);
           return pht(
             '%s edited the end date of %s from %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old,
             $new);
         }
         break;
       case self::TYPE_STATUS:
         $old_name = PhabricatorCalendarEvent::getNameForStatus($old);
         $new_name = PhabricatorCalendarEvent::getNameForStatus($new);
         return pht(
           '%s updated the status of %s from %s to %s.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid),
           $old_name,
           $new_name);
       case self::TYPE_DESCRIPTION:
         return pht(
           '%s updated the description of %s.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid));
+      case self::TYPE_ALL_DAY:
+        if ($new) {
+          return pht(
+            '%s made %s an all day event.',
+            $this->renderHandleLink($author_phid),
+            $this->renderHandleLink($object_phid));
+        } else {
+          return pht(
+            '%s converted %s from an all day event.',
+            $this->renderHandleLink($author_phid),
+            $this->renderHandleLink($object_phid));
+        }
       case self::TYPE_CANCEL:
         if ($new) {
           return pht(
             '%s cancelled %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         } else {
           return pht(
             '%s reinstated %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         }
       case self::TYPE_INVITE:
         $text = null;
 
         if (count($old) === 1
           && count($new) === 1
           && isset($old[$author_phid])) {
           // user joined/declined/accepted event themself
           $old_status = $old[$author_phid];
           $new_status = $new[$author_phid];
 
           if ($old_status !== $new_status) {
             switch ($new_status) {
               case PhabricatorCalendarEventInvitee::STATUS_INVITED:
                 $text = pht(
                   '%s has joined %s.',
                   $this->renderHandleLink($author_phid),
                   $this->renderHandleLink($object_phid));
                   break;
               case PhabricatorCalendarEventInvitee::STATUS_ATTENDING:
                 $text = pht(
                   '%s is attending %s.',
                   $this->renderHandleLink($author_phid),
                   $this->renderHandleLink($object_phid));
                   break;
               case PhabricatorCalendarEventInvitee::STATUS_DECLINED:
               case PhabricatorCalendarEventInvitee::STATUS_UNINVITED:
                 $text = pht(
                   '%s has declined %s.',
                   $this->renderHandleLink($author_phid),
                   $this->renderHandleLink($object_phid));
                   break;
               default:
                 $text = pht(
                   '%s has changed their status of %s.',
                   $this->renderHandleLink($author_phid),
                   $this->renderHandleLink($object_phid));
                 break;
             }
           }
         } else {
           // user changed status for many users
           $self_joined = null;
           $self_declined = null;
           $added = array();
           $uninvited = array();
 
           // $event = $this->renderHandleLink($object_phid);
 
           foreach ($new as $phid => $status) {
             if ($status == PhabricatorCalendarEventInvitee::STATUS_INVITED
               || $status == PhabricatorCalendarEventInvitee::STATUS_ATTENDING) {
               // added users
               $added[] = $phid;
             } else if (
               $status == PhabricatorCalendarEventInvitee::STATUS_DECLINED
               || $status == PhabricatorCalendarEventInvitee::STATUS_UNINVITED) {
               $uninvited[] = $phid;
             }
           }
 
           $count_added = count($added);
           $count_uninvited = count($uninvited);
           $added_text = null;
           $uninvited_text = null;
 
           if ($count_added > 0 && $count_uninvited == 0) {
             $added_text = $this->renderHandleList($added);
             $text = pht('%s invited %s to %s.',
               $this->renderHandleLink($author_phid),
               $added_text,
               $this->renderHandleLink($object_phid));
           } else if ($count_added > 0 && $count_uninvited > 0) {
             $added_text = $this->renderHandleList($added);
             $uninvited_text = $this->renderHandleList($uninvited);
             $text = pht('%s invited %s and uninvited %s to %s',
               $this->renderHandleLink($author_phid),
               $added_text,
               $uninvited_text,
               $this->renderHandleLink($object_phid));
           } else if ($count_added == 0 && $count_uninvited > 0) {
             $uninvited_text = $this->renderHandleList($uninvited);
             $text = pht('%s uninvited %s to %s.',
               $this->renderHandleLink($author_phid),
               $uninvited_text,
               $this->renderHandleLink($object_phid));
           } else {
             $text = pht('%s updated the invitee list of %s.',
               $this->renderHandleLink($author_phid),
               $this->renderHandleLink($object_phid));
           }
         }
         return $text;
     }
 
     return parent::getTitleForFeed();
   }
 
   public function getColor() {
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_NAME:
       case self::TYPE_START_DATE:
       case self::TYPE_END_DATE:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_CANCEL:
       case self::TYPE_INVITE:
         return PhabricatorTransactions::COLOR_GREEN;
     }
 
     return parent::getColor();
   }
 
 
   public function hasChangeDetails() {
     switch ($this->getTransactionType()) {
       case self::TYPE_DESCRIPTION:
         return ($this->getOldValue() !== null);
     }
 
     return parent::hasChangeDetails();
   }
 
   public function renderChangeDetails(PhabricatorUser $viewer) {
     switch ($this->getTransactionType()) {
       case self::TYPE_DESCRIPTION:
         $old = $this->getOldValue();
         $new = $this->getNewValue();
 
         return $this->renderTextCorpusChangeDetails(
           $viewer,
           $old,
           $new);
     }
 
     return parent::renderChangeDetails($viewer);
   }
 
   public function getMailTags() {
     $tags = array();
     switch ($this->getTransactionType()) {
       case self::TYPE_NAME:
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_INVITE:
         $tags[] = self::MAILTAG_CONTENT;
         break;
       case self::TYPE_START_DATE:
       case self::TYPE_END_DATE:
       case self::TYPE_CANCEL:
         $tags[] = self::MAILTAG_RESCHEDULE;
         break;
     }
     return $tags;
   }
 
 }