code: public static double deltaHours(int calUnit, int increments) {
          if (calUnit == Calendar.DATE) {
              return 24 * increments;
          } else if (calUnit == Calendar.HOUR) {
              return increments;
          } else if (calUnit == Calendar.MINUTE) {
              return increments / 60;
          } else if (calUnit == Calendar.SECOND) {
              return increments / 3600;
          }
          return -1;
      }
docs: This used to be 'deltim' in MMS.