Index: wp-admin/includes/ajax-actions.php
===================================================================
--- wp-admin/includes/ajax-actions.php	(revision 23303)
+++ wp-admin/includes/ajax-actions.php	(working copy)
@@ -1039,10 +1039,9 @@
 	$do_lock = true;
 
 	$data = $alert = '';
-	/* translators: draft saved date format, see http://php.net/date */
-	$draft_saved_date_format = __('g:i:s a');
-	/* translators: %s: date and time */
-	$message = sprintf( __('Draft saved at %s.'), date_i18n( $draft_saved_date_format ) );
+	
+	/* translators: %s: time */
+	$message = sprintf( __('Draft saved at %s.'), date_i18n( get_option('time_format') ) );
 
 	$supplemental = array();
 	if ( isset($login_grace_period) )
Index: wp-includes/post-template.php
===================================================================
--- wp-includes/post-template.php	(revision 23303)
+++ wp-includes/post-template.php	(working copy)
@@ -1300,14 +1300,16 @@
 	if ( !in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) )
 		return false;
 
-	/* translators: revision date format, see http://php.net/date */
-	$datef = _x( 'j F, Y @ G:i', 'revision date format');
 	/* translators: 1: date */
 	$autosavef = __( '%1$s [Autosave]' );
 	/* translators: 1: date */
 	$currentf  = __( '%1$s [Current Revision]' );
 
-	$date = date_i18n( $datef, strtotime( $revision->post_modified ) );
+	$date_part = date_i18n( get_option('date_format'), strtotime( $revision->post_modified ) );
+	$time_part = date_i18n( get_option('time_format'), strtotime( $revision->post_modified ) );
+
+	/* translators: 1: date, 2: time */
+	$date = sprintf( __( '%1$s at %2$s' ), $date_part, $time_part );
 	if ( $link && current_user_can( 'edit_post', $revision->ID ) && $link = get_edit_post_link( $revision->ID ) )
 		$date = "<a href='$link'>$date</a>";