diff --git wp-includes/date.php wp-includes/date.php
index 2e903a2..c0fcb3f 100644
--- wp-includes/date.php
+++ wp-includes/date.php
@@ -510,7 +510,17 @@ class WP_Date_Query {
 				$column = 'post_date';
 			}
 
-			$known_columns = array(
+			/**
+			 * Filter the list of known date query columns.
+			 *
+			 * @since 0.0.0
+			 *
+			 * @param array 			   An associative array of known date query columns by core table.
+			 *                             Defaults are posts( 'post_date', 'post_date_gmt', 'post_modified',
+			 *                             'post_modified_gmt'), comments( 'comment_date', 'comment_date_gmt'),
+			 *	                           users( 'user_registered')
+			 */
+			$known_columns = apply_filters( 'date_query_known_columns', array(
 				$wpdb->posts => array(
 					'post_date',
 					'post_date_gmt',
@@ -524,7 +534,7 @@ class WP_Date_Query {
 				$wpdb->users => array(
 					'user_registered',
 				),
-			);
+			) );
 
 			// If it's a known column name, add the appropriate table prefix.
 			foreach ( $known_columns as $table_name => $table_columns ) {