Attempt to parse date string as ISO

app.py

@@ -9,6 +9,7 @@ import matplotlib.pyplot as plt
 import matplotlib.dates as mdates
 import os
 import sparklines
+from dateutil.parser import isoparse
 
 
 app = Flask(__name__)
@@ -164,7 +165,7 @@ def workouts(user_id):
             db.session.add(heart_rate_reading)
 
         if cadence_readings:
-            timestamps = [datetime_converter(
+            timestamps = [isoparse(
                 c['timestamp']) for c in cadence_readings]
             start_time = min(timestamps)
             end_time = max(timestamps)
@@ -435,10 +436,6 @@ def format_duration(duration):
         return f"{minutes}m"
 
 
-def datetime_converter(datetime_str: str) -> datetime:
-    return datetime.strptime(datetime_str, "%Y-%m-%dT%H:%M:%S%z")
-
-
 if __name__ == '__main__':
     # Bind to PORT if defined, otherwise default to 5000.
     port = int(os.environ.get('PORT', 5000))