diff --git a/download.py b/download.py
index 07ef069..ad33cee 100644
--- a/download.py
+++ b/download.py
@@ -67,7 +67,7 @@ def fetch_files(now:str):
             if not os.path.exists(out_path):
                 wget.download(url, out=out_path)
             logger.info(f"download file {out_path} finished")
-    end_date = start_date + dt.timedelta(hours=120)
+    end_date = start_date + dt.timedelta(hours=119)
     time_range = pd.date_range(start_date+dt.timedelta(hours=8), end_date+dt.timedelta(hours=8), freq='H').astype(str).to_list()
     return time_range, date