if(ende.Hour > start.Hour &&
		   (ende.Hour-start.Hour) > 1 &&
		   (ende.Minute-start.Minute) > 1)
			diff += ((ende.Hour-start.Hour)*60);
		else if(ende.Hour < start.Hour)
			diff += (((24-start.Hour)+ende.Hour)*60);

		if(ende.Minute > start.Minute)
			diff += (ende.Minute-start.Minute);
		else if(ende.Minute < start.Minute)
			diff += ((60-start.Minute)+ende.Minute);

		return (diff*60);