Index: sites/all/modules/contrib/apachesolr_biblio/apachesolr_biblio.module
===================================================================
--- sites/all/modules/contrib/apachesolr_biblio/apachesolr_biblio.module	(revision 3184)
+++ sites/all/modules/contrib/apachesolr_biblio/apachesolr_biblio.module	(working copy)
@@ -57,7 +57,7 @@
   if ($node->type != 'biblio') {
     return;
   }
-  $tz = date_default_timezone();
+  $tz = date_default_timezone_name();
   date_default_timezone_set('UTC');
   $fields = apachesolr_biblio_get_fields();
   foreach ($fields as $fid => $biblio) {