FIX: use local tz timestamps for api path (#481)

fastf1/core.py

@@ -1027,10 +1027,17 @@ def __init__(self, event, session_name, f1_api_support=False):
  telemetry data are available."""
  self.date = self.event.get_session_date(session_name, utc=True)
  """pandas.Datetime: Date at which this session took place."""
+
+ try:
+ _api_date = self.event.get_session_date(session_name, utc=False)
+ except ValueError:
+ # not all backends provide local timestamps, use UTC then which
+ # works in almost all cases
+ _api_date = self.date
  self.api_path = api.make_path(
  self.event['EventName'],
  self.event['EventDate'].strftime('%Y-%m-%d'),
- self.name, self.date.strftime('%Y-%m-%d')
+ self.name, _api_date.strftime('%Y-%m-%d')
  )
  """str: API base path for this session"""