don't flag data as outdated which isn't

freqtrade/analyze.py

@@ -2,7 +2,7 @@
 Functions to analyze ticker data with indicators and produce buy and sell signals
 """
 import logging
-from datetime import datetime, timedelta
+from datetime import datetime
 from enum import Enum
 from typing import Dict, List, Tuple
 
@@ -154,7 +154,7 @@ class Analyze(object):
         # Check if dataframe is out of date
         signal_date = arrow.get(latest['date'])
         interval_minutes = constants.TICKER_INTERVAL_MINUTES[interval]
-        if signal_date < (arrow.utcnow() - timedelta(minutes=(interval_minutes + 5))):
+        if signal_date < (arrow.utcnow().shift(minutes=-(interval_minutes * 2 + 5))):
             logger.warning(
                 'Outdated history for pair %s. Last tick is %s minutes old',
                 pair,