Index: wp-includes/general-template.php
===================================================================
--- wp-includes/general-template.php	(revision 11201)
+++ wp-includes/general-template.php	(working copy)
@@ -835,7 +835,7 @@
 			foreach ( (array) $arcresults as $arcresult ) {
 				$url	= get_day_link($arcresult->year, $arcresult->month, $arcresult->dayofmonth);
 				$date = sprintf('%1$d-%2$02d-%3$02d 00:00:00', $arcresult->year, $arcresult->month, $arcresult->dayofmonth);
-				$text = mysql2date($archive_day_date_format, $date);
+				$text = mysql2date($archive_day_date_format, $date, true);
 				if ($show_post_count)
 					$after = ' ('.$arcresult->posts.')'.$afterafter;
 				$output .= get_archives_link($url, $text, $format, $before, $after);