diff --git a/main.ipynb b/main.ipynb
index fddaf80..df53cf5 100644
--- a/main.ipynb
+++ b/main.ipynb
@@ -1353,7 +1353,7 @@
     "\n",
     "    # Usually, x[0] is the question number but the qustionData set might be keyed by the date if it's a daily case\n",
     "    if sortBy == 'date_done' and type(list(questionData.keys())[0]) == datetime :\n",
-    "        dataframe_array.sort(key=lambda x: x[-1])        \n",
+    "        dataframe_array.sort(key=lambda x: datetime.strptime(x[-1], '%b %d, %Y'))\n",
     "    else :\n",
     "        dataframe_array.sort(key=lambda x: questionData.get(x[0])[sortBy])\n",
     "\n",
diff --git a/main.py b/main.py
index 94bfcb6..baefe9d 100644
--- a/main.py
+++ b/main.py
@@ -1166,7 +1166,7 @@ def convertDataToMatrix(questionData: dict,
 
     # Usually, x[0] is the question number but the qustionData set might be keyed by the date if it's a daily case
     if sortBy == 'date_done' and type(list(questionData.keys())[0]) == datetime :
-        dataframe_array.sort(key=lambda x: x[-1])        
+        dataframe_array.sort(key=lambda x: datetime.strptime(x[-1], '%b %d, %Y'))
     else :
         dataframe_array.sort(key=lambda x: questionData.get(x[0])[sortBy])