grib/src/main/java/ucar/nc2/grib/grib2/Grib2SectionIdentification.java
public CalendarDate getReferenceDate() {
    return CalendarDate.of(null, year, month, day, hour, minute, second);
  }
public CalendarDate getReferenceDate() {
    return CalendarDate.of(null, year, month, day, hour, minute, second);
  }
reference reference or base time as Dare.

@return baseTime