@Override
    protected int sortSameDate(final Geocache left, final Geocache right) {
        return compare(left.getEventStartTimeInMinutes(), right.getEventStartTimeInMinutes());
    }
Compares caches by date. Used only for event caches, if the cache list detects that a list contains only events.
main/src/main/java/cgeo/geocaching/sorting/EventDateComparator.java