public class Clock {
    public static void main(String [] args ) {
        final int DAYS_IN_WEEK = 7;
        final int HOURS_IN_DAY = 24;
        final int MINUTES_IN_HOUR = 60;
        final int SECONDS_IN_MINUTE = 60;
        final int SECONDS_IN_HOUR = MINUTES_IN_HOUR * SECONDS_IN_MINUTE;
        final int SECONDS_IN_DAY = HOURS_IN_DAY * MINUTES_IN_HOUR * SECONDS_IN_MINUTE;

        final int totalSeconds = SECONDS_IN_DAY;

        // start the clock
        for (int currentSeconds = 0; currentSeconds <= totalSeconds; currentSeconds++) {
            // calculate what the values are the moment in clock
            int numOfDays = currentSeconds / SECONDS_IN_DAY % DAYS_IN_WEEK;
            int numOfHours = currentSeconds % SECONDS_IN_DAY / SECONDS_IN_HOUR % HOURS_IN_DAY;
            int numOfMinutes = currentSeconds % SECONDS_IN_HOUR / SECONDS_IN_MINUTE % MINUTES_IN_HOUR;
            int numOfSeconds = currentSeconds % SECONDS_IN_MINUTE;
            // print the current times on the clock
            System.out.println(numOfDays + ":" + numOfHours + ":" + numOfMinutes + ":" + numOfSeconds);
        }
    }
}