@AuraEnabled
public String getDateTimeISOString() {
Calendar c = Calendar.getInstance(TimeZone.getTimeZone("GMT"), Locale.US);
c.set(2004, 9, 23, 16, 30, 0);
c.set(Calendar.MILLISECOND, 0);
DateService dateService = DateServiceImpl.get();
return dateService.getDateTimeISO8601Converter().format(c.getTime());
}