// This program determines what year it is right now and what day of the year
// it is.  For a non-leap year, the day-of-year will be between 1 and 365.
// For a leap year, it will be between 1 and 366.

public class Days2 {
    public static void main(String[] args) {
        long millis = System.currentTimeMillis();
        // we subtract 1/3 to account for Pacific Time being 8 hours 
        // behind Greenwich Mean Time; we add 1 because 1/1/70 should
        // be considered day 1 of 1970, not day 0
        int days = (int) (toDays(millis) - 1.0 / 3.0 + 1);
        int year = 1970;
                
        // This loop subtracts 365 for non-leap years and subtracts
        // 366 for leap years until the number of days is in the
        // appropriate range (<= 365 for non-leap, <= 366 for leap).
        while ((days > 365 && year % 4 != 0) || (days > 366 && year % 4 == 0)) {
            if (year % 4 == 0) {
                days -= 366;
                year++;
            } else {
                days -= 365;
                year++;
            }
        }
        // the code above could be improved by factoring out the common line of
        // code "year++" in the if/else, but the code above is closer in
        // structure to the code that caused the infamous Zune bug on 12/31/08:
        /* 
        while (days > 365) {
            if (year % 4 == 0) {
                if (days > 366) {
                    days -= 366;
                    year++;
                }
            } else {
                days -= 365;
                year++;
            }
        }
        */

        System.out.println("millis = " + millis);
        System.out.println("year   = " + year);
        System.out.println("days   = " + days);
    }

    // converts milliseconds to days
    public static double toDays(double millis) {
        return millis / 1000.0 / 60.0 / 60.0 / 24.0;
    }
}