@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        WeekDayNumData that = (WeekDayNumData) o;

        if (occurence != that.occurence) return false;
        if (weekday != that.weekday) return false;

        return true;
    }