diff --git a/adm/timezone/Australia_South b/adm/timezone/Australia_South
index 3badebd4d..578003428 100644
--- a/adm/timezone/Australia_South
+++ b/adm/timezone/Australia_South
@@ -1,4 +1,4 @@
-CST 34200 CST 37800
+CST 34200 CDT 37800
 1538836200 1554568200
 1570293000 1586017800
 1601742600 1617467400