private static void deriveDateTime(List<LocalDateTime> list) {

    long total = 0;
    long start = System.nanoTime();
    for (LocalDateTime dt : list) {
      total += dt.get(YEAR);
      total += dt.get(MONTH_OF_YEAR);
      total += dt.get(DAY_OF_MONTH);
      total += dt.get(HOUR_OF_DAY);
      total += dt.get(MINUTE_OF_HOUR);
    }
    long end = System.nanoTime();
    System.out.println("LocalDT:   Derive: " + NF.format(end - start) + " ns" + " " + total);
    result("LocalDT-V", end - start);
  }