public class Time {

public static void main(String[] args) {

double hourStart = 16.0;

double minuteStart = 20.0;

double secondStart = 25.0;

System.out.print("Seconds since midnight: " );

double secondsSinceMidnight = hourStart * 3600 + minuteStart * 60 + secondStart;

System.out.println(secondsSinceMidnight);

System.out.print("Seconds remaining in the day: ");

double secondsRemainingInDay = 86400 - secondsSinceMidnight;

System.out.println(secondsRemainingInDay);

System.out.print("Percentage of the day that has passed: ");

double percentageOfDayPassed = secondsSinceMidnight / 86400 * 100;

System.out.println(percentageOfDayPassed);

double hourEnd = 16.0;

double minuteEnd = 50.0;

double secondEnd = 11.0;

System.out.print("Seconds elapsed since I started this exercise: ");

double secondsSinceStart = (hourEnd * 3600 + minuteEnd * 60 + secondEnd) - secondsSinceMidnight;

System.out.println(secondsSinceStart);

}

}