Update app.py

app.py

@@ -260,8 +260,9 @@ def get_latest_data_sequence(sequence_length: int, latitude: float, longitude: f
         window_end_time_dt = current_utc_time.replace(minute=0, second=0, microsecond=0)
         
         # Convert Python datetime to Pandas Timestamp for robust comparison
-        window_start_time_ts = pd.Timestamp(window_start_time_dt, tz='UTC')
-        window_end_time_ts = pd.Timestamp(window_end_time_dt, tz='UTC')
+        # `window_start_time_dt` and `window_end_time_dt` are already UTC-aware from `datetime.now(pytz.utc)`
+        window_start_time_ts = pd.Timestamp(window_start_time_dt)
+        window_end_time_ts = pd.Timestamp(window_end_time_dt)
 
         # Ensure df_processed.index is timezone-aware (it should be if APIs return UTC and pd.to_datetime is used correctly)
         if df_processed.index.tz is None: