cdm/src/main/java/ucar/nc2/time/CalendarDateUnit.java
public double makeOffsetFromRefDate( CalendarDate date) {
    if (isCalendarField) {
      if (date.equals(baseDate)) return 0.0;
      return date.getDifference(baseDate, periodField);
    } else {
      long msecs = date.getDifferenceInMsecs(baseDate);
      return msecs / period.getValueInMillisecs();
    }
  }
public double makeOffsetFromRefDate( CalendarDate date) {
    if (isCalendarField) {
      if (date.equals(baseDate)) return 0.0;
      return date.getDifference(baseDate, periodField);
    } else {
      long msecs = date.getDifferenceInMsecs(baseDate);
      return msecs / period.getValueInMillisecs();
    }
  }
public double makeOffsetFromRefDate ( CalendarDate date ) { if ( isCalendarField ) { if ( date . equals ( baseDate ) ) return 0.0 ; return date . getDifference ( baseDate , periodField ) ; } else { long msecs = date . getDifferenceInMsecs ( baseDate ) ; return msecs / period . getValueInMillisecs ( ) ; } }
inverse of makeCalendarDate
inverse of makeCalendarDate