diff --git a/smart_date.views.inc b/smart_date.views.inc
index 7819c1d..e76a4c9 100644
--- a/smart_date.views.inc
+++ b/smart_date.views.inc
@@ -69,7 +69,12 @@ function smart_date_field_views_data(FieldStorageConfigInterface $field) {
           $data[$table_name][$field_name . '_' . $column][$type]['property'] = $column;
         }
       }
+
+      if ($column == "value") {
+        _smart_date_add_views_granularity_arguments($data, $field, $table_name, $column);
+      }
     }
+
     // Provide a relationship for the entity type with the entity reference
     // revisions field.
     $args = [
@@ -92,3 +97,42 @@ function smart_date_field_views_data(FieldStorageConfigInterface $field) {
 
   return $data;
 }
+
+/**
+ * Helper for hook_views_data to add various argument types.
+ */
+function _smart_date_add_views_granularity_arguments(&$data, $field, $table_name, $column) {
+  $entity_type_id = $field->getTargetEntityTypeId();
+  $entity_manager = \Drupal::entityTypeManager();
+  $entity_type = $entity_manager->getDefinition($entity_type_id);
+
+  // Granularity argument handlers.
+  $arguments = [
+    // Argument type => help text.
+    'year' => t('Date in the form of YYYY.'),
+    'month' => t('Date in the form of MM (01 - 12).'),
+    'day' => t('Date in the form of DD (01 - 31).'),
+    'week' => t('Date in the form of WW (01 - 53).'),
+    //'year_week' => t('Date in the form of YYYYW'), // Already added by calendar module(!)
+    'year_month' => t('Date in the form of YYYYMM.'),
+    'full_date' => t('Date in the form of CCYYMMDD.'),
+  ];
+  foreach ($arguments as $argument_type => $help_text) {
+    $column_name_text = $column === $field->getMainPropertyName() ? '' : ':' . $column;
+    $data[$table_name][$field->getName() . '_' . $column . '_' . $argument_type] = [
+      'title' => t('@label@column (@argument)', [
+        '@label' => $field->getLabel(),
+        '@column' => $column_name_text,
+        '@argument' => $argument_type,
+      ]),
+      'help' => $help_text,
+      'argument' => [
+        'field' => $field->getName() . '_' . $column,
+        'id' => 'date_' . $argument_type,
+        'entity_type' => $field->getTargetEntityTypeId(),
+        'field_name' => $field->getName(),
+      ],
+      'group' => $entity_type->getLabel(),
+    ];
+  }
+}