public List<Day> getDaysWithoutTitlesAndOnlyCurrent() {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(firstDay.getCalendar().getTime());
        int currentMonth = calendar.get(Calendar.MONTH);

        List<Day> result = new ArrayList<>();
        for (Day day : days) {
            calendar.setTime(day.getCalendar().getTime());
            if (!(day instanceof DayOfWeek) && calendar.get(Calendar.MONTH) == currentMonth) {
                result.add(day);
            }
        }
        return result;
    }
Returns selected days that belong only to current month

@return
cosmocalendar/src/main/java/com/applikeysolutions/cosmocalendar/model/Month.java