code: public static int getDayOfYear(Calendar cal, int type) {
          int jday = cal.get(Calendar.DAY_OF_YEAR);
          int mo = cal.get(java.util.Calendar.MONTH) + 1;
          if (type == CALENDAR_YEAR) {
              return jday;
          } else if (type == SOLAR_YEAR) {
              int day = cal.get(Calendar.DAY_OF_MONTH);
              return (mo == 12 && day > 21) ? (day - 21) : (jday + 10);
          } else if (type == WATER_YEAR) {
              return (mo > 9) ? (jday - (isLeapYear(cal.get(Calendar.YEAR)) ? 274 : 273)) : (jday + 92);
          }
          throw new IllegalArgumentException("getDayOfYear() type argument unknown");
      }
docs: Get the Day of the year in WATER, SOLAR, or CALENDAR year.