cal.set(500, 0, 1);
Date beginning1 = cal.getTime();
cal.set(1000, 0, 1);
Date end1 = cal.getTime();
OrdinalEra ordinalEra1 = new DefaultOrdinalEra(new SimpleInternationalString("Mesozoic"), beginning1, end1);
cal.set(1000, 1, 1);
Date beginning2 = cal.getTime();
cal.set(2000, 0, 1);
Date end2 = cal.getTime();
OrdinalEra ordinalEra2 = new DefaultOrdinalEra(new SimpleInternationalString("Cenozoic"), beginning2, end2);
ordinalPosition1 = new DefaultOrdinalPosition(frame, IndeterminateValue.UNKNOWN, ordinalEra1);
ordinalPosition2 = new DefaultOrdinalPosition(frame, IndeterminateValue.AFTER, ordinalEra2);
}