public static void test()

    ThreadPoolManager.getInstance().scheduleAtFixedRate(new Runnable()
    {
        @Override
        public void run()
        {
            int hour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
            int MINUTE = Calendar.getInstance().get(Calendar.MINUTE);

            if( (hour >= 0 && hour <= 5) ||
                    (hour == 5 && MINUTE >= 15 && hour == 5 &&  MINUTE <=30 ) ||
                    (hour == 5 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 6 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 6 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 7 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 7 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 8 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 8 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 9 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 9 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 10 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 10 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 11 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 11 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 12 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 12 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 13 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 13 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 14 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 14 && MINUTE >= 45 && MINUTE <=59 ) ||

                    (hour == 15 && MINUTE >= 15 && MINUTE <=30 ) ||
                    (hour == 15 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 16 && MINUTE >= 15 && MINUTE <=30 ) ||
                (hour == 16 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 17 && MINUTE >= 15 && MINUTE <=30 ) ||
                (hour == 17 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 18 && MINUTE >= 15 && MINUTE <=30 ) ||
                (hour == 18 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 19 && MINUTE >= 15 && MINUTE <=40 ) ||

                (hour == 21 && MINUTE >= 1 && MINUTE  <=30 ) ||
                (hour == 21 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 22 && MINUTE >= 15 && MINUTE <=30 ) ||
                (hour == 22 && MINUTE >= 45 && MINUTE <=59 ) ||

                (hour == 23 && MINUTE >= 15 && MINUTE <=30 ) ||
                (hour == 23 && MINUTE >= 45 && MINUTE <=59 ) )

            {
              testfunktion();
            }
        }
    }, 3*60*1000, 3*60*1000);
    }