diff --git a/VIPSWeb/static/js/frontpage.js b/VIPSWeb/static/js/frontpage.js
index f1a2e034d39af3fb56a5c429ffc15ff14e03cf3d..ae22a091dc338e52f1fbbb0e118f677eb145a0f5 100755
--- a/VIPSWeb/static/js/frontpage.js
+++ b/VIPSWeb/static/js/frontpage.js
@@ -70,7 +70,7 @@ var filteredObservations;
  */
 function cacheObservations(callback)
 {
-	var systemTime = moment().subtract(settings.systemTimeOffsetMonths,"months");
+	var systemTime = moment().add(settings.systemTimeOffsetMonths,"months");
     var from = systemTime.format("YYYY") + "-01-01"; // XXXX-01-01
     var to = systemTime.format("YYYY-MM-DD"); 
     var uuidParam = settings.userUuid != null ? "&userUUID=" + settings.userUuid : "";