diff --git a/src/wp-admin/js/post.js b/src/wp-admin/js/post.js
index a02be9fb08..2b55a2bf2f 100644
--- a/src/wp-admin/js/post.js
+++ b/src/wp-admin/js/post.js
@@ -561,10 +561,10 @@ jQuery(document).ready( function($) {
 					'\n' + publishOn + ' <b>' +
 					postL10n.dateFormat
 						.replace( '%1$s', $( 'option[value="' + mm + '"]', '#mm' ).attr( 'data-text' ) )
-						.replace( '%2$s', jj )
+						.replace( '%2$s', parseInt( jj, 10 ) )
 						.replace( '%3$s', aa )
-						.replace( '%4$s', hh )
-						.replace( '%5$s', mn ) +
+						.replace( '%4$s', ( '00' + hh ).slice( -2 ) )
+						.replace( '%5$s', ( '00' + mn ).slice( -2 ) ) +
 						'</b> '
 				);
 			}