Index: src/wp-includes/general-template.php
===================================================================
--- src/wp-includes/general-template.php	(revision 36991)
+++ src/wp-includes/general-template.php	(working copy)
@@ -1676,8 +1676,14 @@
 		$order = 'DESC';
 	}
 
-	// this is what will separate dates on weekly archive links
-	$archive_week_separator = '–';
+	/**
+	 * Filter what will separate dates on weekly archive links.
+	 *
+	 * @since 4.5
+	 *
+	 * @param string '-' (–) used to split the atart and end for the week.
+	 */
+	$archive_week_separator =  apply_filters( 'getarchives_week_separator', '–' );
 
 	// over-ride general date format ? 0 = no: use the date format set in Options, 1 = yes: over-ride
 	$archive_date_format_over_ride = 0;