code: public long fromISO8601Date(String isoDt, DateTimeZone dtz) throws IllegalArgumentException {
  		LocalDate lDate = FORMATTER__ISO_DATE.parseLocalDate(isoDt);
  		return lDate.toDateTimeAtStartOfDay(dtz).getMillis(); // avoids bizarre situations like 1969-06-01 in IT (there was no 00:00)
  	}
docs: /* ISO8601 -> long