diff --git a/Cluster_Analysis.ipynb b/Cluster_Analysis.ipynb
index e429ba81edd98d9192048ddb07820be95818c8a9..abdd20602dffa2c11be6e53bcd182cc1ea0faa9a 100644
--- a/Cluster_Analysis.ipynb
+++ b/Cluster_Analysis.ipynb
@@ -78,8 +78,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "start_date = '2020-11-01'\n",
-    "end_date = '2020-11-23'"
+    "start_date = 'yyyy-mm-dd'\n",
+    "end_date = 'yyyy-mm-dd'"
    ]
   },
   {