diff --git a/wp-admin/post.php b/wp-admin/post.php
index 5cc343ecd1..6ecb769763 100644
--- a/wp-admin/post.php
+++ b/wp-admin/post.php
@@ -84,8 +84,10 @@ switch($action) {
             $mn = ($mn > 59) ? $mn - 60 : $mn;
             $ss = ($ss > 59) ? $ss - 60 : $ss;
             $now = "$aa-$mm-$jj $hh:$mn:$ss";
+	    // for GMT dates: compute GMT time from user's timezone time with time_difference
         } else {
             $now = current_time('mysql');
+	    // for GMT dates: $now = gmdate('Y-m-d H:i:s');
         }
 
 		if (!empty($HTTP_POST_VARS['mode'])) {
@@ -309,10 +311,16 @@ switch($action) {
             $mn = ($mn > 59) ? $mn - 60 : $mn;
             $ss = ($ss > 59) ? $ss - 60 : $ss;
             $datemodif = ", post_date=\"$aa-$mm-$jj $hh:$mn:$ss\"";
+	    /* for GMT dates:
+	    $add_hours = intval($time_difference);
+	    $add_minutes = intval(60 * ($time_difference - $add_hours));
+	    $datemodif = ", post_date = DATE_ADD('$aa-$mm-$jj $hh:$mn:$ss', INTERVAL '-$add_hours:$add_minutes' HOUR_MINUTE)";
+	    */
         } else {
             $datemodif = '';
         }
 		$now = current_time('mysql');
+		// for GMT dates: $now = gmdate('Y-m-d H:i:s');
 
         $result = $wpdb->query("
 			UPDATE $tableposts SET