def _fixTimestamp(self):
        """
        Turns the NMEAProtocol timestamp notation into a datetime.time object.
        The time in this object is expressed as Zulu time.
        """
        timestamp = self.currentSentence.timestamp.split('.')[0]
        timeObject = datetime.datetime.strptime(timestamp, '%H%M%S').time()
        self._sentenceData['_time'] = timeObject

        Turns the NMEAProtocol timestamp notation into a datetime.time object.
        The time in this object is expressed as Zulu time.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/positioning/nmea.py