static int dayOfWeek_nr() {
  ret dayOfWeek_nr(java.util.Calendar.getInstance());
}

static int dayOfWeek_nr(java.util.Calendar calendar) {
  ret calendar.get(java.util.Calendar.DAY_OF_WEEK);
}

static int dayOfWeek_nr(long time) {
  ret dayOfWeek_nr(calendarFromTime(time));
}

static int dayOfWeek_nr(long time, TimeZone tz) {
  ret dayOfWeek_nr(calendarFromTime(time, tz));
}