function calcDeliveryTimeRang() {
  let interval = 20;
  let start = dayjs(this.nowTime);
  let takeUpTime = Number(this.sale.billServiceTime);
  let min = dayjs(start).add(takeUpTime, "minute");
  let max = dayjs(start).add(24, "hour");
  let current = min;

  let array = [];
  do {
    current = current.add(interval, "minute");
    array.push({
      label: current.format("HH:mm"),
      value: current.format("YYYY-MM-DD HH:mm"),
    });
  } while (current.add(interval, "minute").isBefore(dayjs(max)));

  array.push({
    label: current.format("HH:mm"),
    value: current.format("YYYY-MM-DD HH:mm"),
  });

  return array;
}