diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -2137,6 +2137,8 @@
     'PhabricatorCalendarImportOrphanLogType' => 'applications/calendar/importlog/PhabricatorCalendarImportOrphanLogType.php',
     'PhabricatorCalendarImportPHIDType' => 'applications/calendar/phid/PhabricatorCalendarImportPHIDType.php',
     'PhabricatorCalendarImportQuery' => 'applications/calendar/query/PhabricatorCalendarImportQuery.php',
+    'PhabricatorCalendarImportReloadController' => 'applications/calendar/controller/PhabricatorCalendarImportReloadController.php',
+    'PhabricatorCalendarImportReloadTransaction' => 'applications/calendar/xaction/PhabricatorCalendarImportReloadTransaction.php',
     'PhabricatorCalendarImportSearchEngine' => 'applications/calendar/query/PhabricatorCalendarImportSearchEngine.php',
     'PhabricatorCalendarImportTransaction' => 'applications/calendar/storage/PhabricatorCalendarImportTransaction.php',
     'PhabricatorCalendarImportTransactionQuery' => 'applications/calendar/query/PhabricatorCalendarImportTransactionQuery.php',
@@ -6982,6 +6984,8 @@
     'PhabricatorCalendarImportOrphanLogType' => 'PhabricatorCalendarImportLogType',
     'PhabricatorCalendarImportPHIDType' => 'PhabricatorPHIDType',
     'PhabricatorCalendarImportQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
+    'PhabricatorCalendarImportReloadController' => 'PhabricatorCalendarController',
+    'PhabricatorCalendarImportReloadTransaction' => 'PhabricatorCalendarImportTransactionType',
     'PhabricatorCalendarImportSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'PhabricatorCalendarImportTransaction' => 'PhabricatorModularTransaction',
     'PhabricatorCalendarImportTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
diff --git a/src/applications/calendar/application/PhabricatorCalendarApplication.php b/src/applications/calendar/application/PhabricatorCalendarApplication.php
--- a/src/applications/calendar/application/PhabricatorCalendarApplication.php
+++ b/src/applications/calendar/application/PhabricatorCalendarApplication.php
@@ -85,6 +85,8 @@
             => 'PhabricatorCalendarImportDisableController',
           'delete/(?P<id>[1-9]\d*)/'
             => 'PhabricatorCalendarImportDeleteController',
+          'reload/(?P<id>[1-9]\d*)/'
+            => 'PhabricatorCalendarImportReloadController',
           'drop/'
             => 'PhabricatorCalendarImportDropController',
           'log/' => array(
diff --git a/src/applications/calendar/controller/PhabricatorCalendarImportReloadController.php b/src/applications/calendar/controller/PhabricatorCalendarImportReloadController.php
new file mode 100644
--- /dev/null
+++ b/src/applications/calendar/controller/PhabricatorCalendarImportReloadController.php
@@ -0,0 +1,52 @@
+<?php
+
+final class PhabricatorCalendarImportReloadController
+  extends PhabricatorCalendarController {
+
+  public function handleRequest(AphrontRequest $request) {
+    $viewer = $request->getViewer();
+
+    $import = id(new PhabricatorCalendarImportQuery())
+      ->setViewer($viewer)
+      ->withIDs(array($request->getURIData('id')))
+      ->requireCapabilities(
+        array(
+          PhabricatorPolicyCapability::CAN_VIEW,
+          PhabricatorPolicyCapability::CAN_EDIT,
+        ))
+      ->executeOne();
+    if (!$import) {
+      return new Aphront404Response();
+    }
+
+    $import_uri = $import->getURI();
+
+    if ($request->isFormPost()) {
+      $xactions = array();
+      $xactions[] = id(new PhabricatorCalendarImportTransaction())
+        ->setTransactionType(
+          PhabricatorCalendarImportReloadTransaction::TRANSACTIONTYPE)
+        ->setNewValue(true);
+
+      $editor = id(new PhabricatorCalendarImportEditor())
+        ->setActor($viewer)
+        ->setContinueOnNoEffect(true)
+        ->setContinueOnMissingFields(true)
+        ->setContentSourceFromRequest($request);
+
+      $editor->applyTransactions($import, $xactions);
+
+      return id(new AphrontRedirectResponse())->setURI($import_uri);
+    }
+
+    return $this->newDialog()
+      ->setTitle(pht('Reload Events'))
+      ->appendParagraph(
+        pht(
+          'Reload this source? Events imported from this source will '.
+          'be updated.'))
+      ->addCancelButton($import_uri)
+      ->addSubmitButton(pht('Reload Events'));
+  }
+
+}
diff --git a/src/applications/calendar/controller/PhabricatorCalendarImportViewController.php b/src/applications/calendar/controller/PhabricatorCalendarImportViewController.php
--- a/src/applications/calendar/controller/PhabricatorCalendarImportViewController.php
+++ b/src/applications/calendar/controller/PhabricatorCalendarImportViewController.php
@@ -105,6 +105,17 @@
         ->setWorkflow(!$can_edit)
         ->setHref($edit_uri));
 
+    $reload_uri = "import/reload/{$id}/";
+    $reload_uri = $this->getApplicationURI($reload_uri);
+
+    $curtain->addAction(
+      id(new PhabricatorActionView())
+        ->setName(pht('Reload Import'))
+        ->setIcon('fa-refresh')
+        ->setDisabled(!$can_edit)
+        ->setWorkflow(true)
+        ->setHref($reload_uri));
+
     $disable_uri = "import/disable/{$id}/";
     $disable_uri = $this->getApplicationURI($disable_uri);
     if ($import->getIsDisabled()) {
@@ -123,7 +134,6 @@
         ->setWorkflow(true)
         ->setHref($disable_uri));
 
-
     if ($can_edit) {
       $can_delete = $engine->canDeleteAnyEvents($viewer, $import);
     } else {
diff --git a/src/applications/calendar/editor/PhabricatorCalendarImportEditEngine.php b/src/applications/calendar/editor/PhabricatorCalendarImportEditEngine.php
--- a/src/applications/calendar/editor/PhabricatorCalendarImportEditEngine.php
+++ b/src/applications/calendar/editor/PhabricatorCalendarImportEditEngine.php
@@ -101,6 +101,26 @@
         ->setConduitDescription(pht('Disable or restore the import.'))
         ->setConduitTypeDescription(pht('True to cancel the import.'))
         ->setValue($object->getIsDisabled()),
+      id(new PhabricatorBoolEditField())
+        ->setKey('delete')
+        ->setLabel(pht('Delete Imported Events'))
+        ->setDescription(pht('Delete all events from this source.'))
+        ->setTransactionType(
+          PhabricatorCalendarImportDisableTransaction::TRANSACTIONTYPE)
+        ->setIsConduitOnly(true)
+        ->setConduitDescription(pht('Disable or restore the import.'))
+        ->setConduitTypeDescription(pht('True to delete imported events.'))
+        ->setValue(false),
+      id(new PhabricatorBoolEditField())
+        ->setKey('reload')
+        ->setLabel(pht('Reload Import'))
+        ->setDescription(pht('Reload events imported from this source.'))
+        ->setTransactionType(
+          PhabricatorCalendarImportDisableTransaction::TRANSACTIONTYPE)
+        ->setIsConduitOnly(true)
+        ->setConduitDescription(pht('Disable or restore the import.'))
+        ->setConduitTypeDescription(pht('True to reload the import.'))
+        ->setValue(false),
     );
 
     $import_engine = $object->getEngine();
diff --git a/src/applications/calendar/editor/PhabricatorCalendarImportEditor.php b/src/applications/calendar/editor/PhabricatorCalendarImportEditor.php
--- a/src/applications/calendar/editor/PhabricatorCalendarImportEditor.php
+++ b/src/applications/calendar/editor/PhabricatorCalendarImportEditor.php
@@ -28,11 +28,23 @@
     PhabricatorLiskDAO $object,
     array $xactions) {
 
-    if ($this->getIsNewObject()) {
+    $type_reload = PhabricatorCalendarImportReloadTransaction::TRANSACTIONTYPE;
+
+    // We import events when you create a source, or if you later reload it
+    // explicitly.
+    $should_reload = $this->getIsNewObject();
+    foreach ($xactions as $xaction) {
+      if ($xaction->getTransactionType() == $type_reload) {
+        $should_reload = true;
+        break;
+      }
+    }
+
+    if ($should_reload) {
       $actor = $this->getActor();
 
       $import_engine = $object->getEngine();
-      $import_engine->didCreateImport($actor, $object);
+      $import_engine->importEventsFromSource($actor, $object);
     }
 
     return $xactions;
diff --git a/src/applications/calendar/import/PhabricatorCalendarICSFileImportEngine.php b/src/applications/calendar/import/PhabricatorCalendarICSFileImportEngine.php
--- a/src/applications/calendar/import/PhabricatorCalendarICSFileImportEngine.php
+++ b/src/applications/calendar/import/PhabricatorCalendarICSFileImportEngine.php
@@ -59,7 +59,7 @@
     }
   }
 
-  public function didCreateImport(
+  public function importEventsFromSource(
     PhabricatorUser $viewer,
     PhabricatorCalendarImport $import) {
 
diff --git a/src/applications/calendar/import/PhabricatorCalendarICSURIImportEngine.php b/src/applications/calendar/import/PhabricatorCalendarICSURIImportEngine.php
--- a/src/applications/calendar/import/PhabricatorCalendarICSURIImportEngine.php
+++ b/src/applications/calendar/import/PhabricatorCalendarICSURIImportEngine.php
@@ -71,7 +71,7 @@
     return pht('ICS URI');
   }
 
-  public function didCreateImport(
+  public function importEventsFromSource(
     PhabricatorUser $viewer,
     PhabricatorCalendarImport $import) {
 
diff --git a/src/applications/calendar/import/PhabricatorCalendarImportEngine.php b/src/applications/calendar/import/PhabricatorCalendarImportEngine.php
--- a/src/applications/calendar/import/PhabricatorCalendarImportEngine.php
+++ b/src/applications/calendar/import/PhabricatorCalendarImportEngine.php
@@ -25,7 +25,7 @@
 
   abstract public function getDisplayName(PhabricatorCalendarImport $import);
 
-  abstract public function didCreateImport(
+  abstract public function importEventsFromSource(
     PhabricatorUser $viewer,
     PhabricatorCalendarImport $import);
 
diff --git a/src/applications/calendar/importlog/PhabricatorCalendarImportUpdateLogType.php b/src/applications/calendar/importlog/PhabricatorCalendarImportUpdateLogType.php
--- a/src/applications/calendar/importlog/PhabricatorCalendarImportUpdateLogType.php
+++ b/src/applications/calendar/importlog/PhabricatorCalendarImportUpdateLogType.php
@@ -26,7 +26,7 @@
   public function getDisplayIcon(
     PhabricatorUser $viewer,
     PhabricatorCalendarImportLog $log) {
-    return 'fa-upload';
+    return 'fa-calendar';
   }
 
   public function getDisplayColor(
diff --git a/src/applications/calendar/xaction/PhabricatorCalendarImportReloadTransaction.php b/src/applications/calendar/xaction/PhabricatorCalendarImportReloadTransaction.php
new file mode 100644
--- /dev/null
+++ b/src/applications/calendar/xaction/PhabricatorCalendarImportReloadTransaction.php
@@ -0,0 +1,23 @@
+<?php
+
+final class PhabricatorCalendarImportReloadTransaction
+  extends PhabricatorCalendarImportTransactionType {
+
+  const TRANSACTIONTYPE = 'calendar.import.reload';
+
+  public function generateOldValue($object) {
+    return false;
+  }
+
+  public function applyExternalEffects($object, $value) {
+    // NOTE: This transaction does nothing directly; instead, the Editor
+    // reacts to it and performs the reload.
+  }
+
+  public function getTitle() {
+    return pht(
+      '%s reloaded this event source.',
+      $this->renderAuthor());
+  }
+
+}