--- sites/all/modules/apachesolr/apachesolr_search.module	2009-10-22 11:37:48.000000000 +1300
+++ /home/stuart/sites/reaa_dev/modules/acquia/apachesolr/apachesolr_search.module	2009-10-22 12:49:48.000000000 +1300
@@ -454,8 +454,12 @@ function apachesolr_search_date_range($q
   // facet.date.* params from the DB and determine the best search
   // gap to use.  This callback assumes $delta is 'changed' or 'created'.
   if (!isset($start_iso)) {
-    $start_iso = apachesolr_date_iso(db_result(db_query("SELECT MIN($facet_field) FROM {node} WHERE status = 1")));
-    $end_iso = apachesolr_date_iso(db_result(db_query("SELECT MAX($facet_field) FROM {node} WHERE status = 1")));
+    $min = db_result(db_query("SELECT MIN($facet_field) FROM {node} WHERE status = 1"));
+    $start_date = strtotime(date('Y-01-01'), $min); // start of the year
+    $start_iso = apachesolr_date_iso($start_date);
+    $max = db_result(db_query("SELECT MAX($facet_field) FROM {node} WHERE status = 1"));
+    $end_date = strtotime(date('Y-12-31 23:59:59', $max));
+    $end_iso = apachesolr_date_iso($end_date);
     $gap = apachesolr_date_determine_gap($start_iso, $end_iso);
   }
   // Return a query range from the beginning of a gap period to the beginning