code: public static long getLongWithCurrentDate(String value, String timezone) {
      if (Strings.isNullOrEmpty(value)) {
        return 0;
      }
  
      DateTime time = getCurrentTime(timezone);
      DateTimeFormatter dtFormatter = DateTimeFormat.forPattern(CURRENT_DATE_FORMAT).withZone(time.getZone());
      if (value.toUpperCase().startsWith(CURRENT_DAY)) {
        return Long
            .parseLong(dtFormatter.print(time.minusDays(Integer.parseInt(value.substring(CURRENT_DAY.length() + 1)))));
      }
      if (value.toUpperCase().startsWith(CURRENT_HOUR)) {
        return Long
            .parseLong(dtFormatter.print(time.minusHours(Integer.parseInt(value.substring(CURRENT_HOUR.length() + 1)))));
      }
      return Long.parseLong(value);
    }
docs: Helper method for getting a value containing CURRENTDAY-1 or CURRENTHOUR-1 in the form yyyyMMddHHmmss
  @param value
  @param timezone
  @return