Update app.py

app.py

@@ -225,7 +225,7 @@ def dist(output_file, input_checks):
 
     
     base = alt.Chart(data).encode(
-    x ="Date",
+    x ="Date:T",
     y=alt.Y("Frequency", scale=alt.Scale(domain=[0, (n + 9) // 10 * 10])),
     color=alt.Color("Emotion category", scale=alt.Scale(domain=domain, range=range_), legend=alt.Legend(orient='bottom', direction='horizontal')))