diff --git a/src/applications/calendar/query/PhabricatorCalendarEventQuery.php b/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
--- a/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
+++ b/src/applications/calendar/query/PhabricatorCalendarEventQuery.php
@@ -180,6 +180,21 @@
 
 
   protected function willFilterPage(array $events) {
+    foreach ($events as $key => $event) {
+      $event_start = $event->getDateFrom();
+      $event_end = $event->getDateTo();
+
+      $range_start = $this->rangeBegin;
+      $range_end = $this->rangeEnd;
+
+      if ($range_start && $event_end < $range_start) {
+        unset($events[$key]);
+      }
+      if ($range_end && $event_start > $range_end) {
+        unset($events[$key]);
+      }
+    }
+
     $phids = array();
 
     foreach ($events as $event) {
@@ -197,6 +212,8 @@
       $event->attachInvitees($event_invitees);
     }
 
+    $events = msort($events, 'getDateFrom');
+
     return $events;
   }