Add debug logging

latecomers/parse.py

@@ -197,6 +197,8 @@ def parse_fr24(
     """
     This function parses the given FlightRadar24 data into a pandas DataFrame.
     """
+    logger.debug("fr24 raw data: %s", data)
+
     if not data:
         return None
 
@@ -219,6 +221,7 @@ def parse_fr24(
                 ts = flight["flight"]["time"]["real"]["arrival"]
                 real_arrival = datetime.fromtimestamp(ts).strftime("%H:%M")
                 results[code] = real_arrival
+                logger.debug(f"{code} -> {real_arrival}")
             except:  # noqa: E722
                 continue