Index: wp-admin/edit-post-rows.php
===================================================================
--- wp-admin/edit-post-rows.php	(revision 6778)
+++ wp-admin/edit-post-rows.php	(working copy)
@@ -50,7 +50,7 @@
 			if ( ( time() - get_post_time() ) < 86400 )
 				echo sprintf( __('%s ago'), human_time_diff( get_post_time() ) );
 			else
-				the_time(__('Y/m/d'));
+				the_time(__('Y/m/d g:i A'));
 		}
 		?></a></td>
 		<?php