code: public static DateTime getDateTime(final double date, final boolean use1904windowing) {
          final Calendar c = ExcelDateUtil.getJavaCalendar(date, use1904windowing);
  
          if (c == null) {
              return null;
          }
  
          return new DateTime().withYear(c.get(Calendar.YEAR)).withMonthOfYear(c.get(Calendar.MONTH) + 1).withDayOfMonth(c.get(Calendar.DAY_OF_MONTH))
                  .withMillisOfDay(0);
      }
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