This closes #5   merge
diff --git a/quickstart.md b/quickstart.md
index 047a4e9..0deb6f6 100644
--- a/quickstart.md
+++ b/quickstart.md
@@ -18,7 +18,7 @@
 
 as every day we have one daily partition dt(like 20180912), 
 
-for every day we have 24 hourly partitions(like 01,02, ...).
+for every day we have 24 hourly partitions(like 00, 01, 02, ..., 23).
 
 ## Environment Preparation
 You need to prepare the environment for Apache Griffin measure module, including the following software: