function _determineFocusedDate(){

		var aSelectedDates = this.getSelectedDates();
		var sCalendarType = this._getPrimaryCalendarType();
		if (aSelectedDates && aSelectedDates[0] && aSelectedDates[0].getStartDate()) {
			// selected dates are provided -> use first one to focus
			this._oFocusedDate = CalendarDate.fromLocalJSDate(aSelectedDates[0].getStartDate(), sCalendarType);
		} else {
			// use current date
			this._oFocusedDate = CalendarDate.fromLocalJSDate(UI5Date.getInstance(), sCalendarType);
		}

		if (this._oFocusedDate.isBefore(this._oMinDate)) {
			this._oFocusedDate = new CalendarDate(this._oMinDate, sCalendarType);
		} else if (this._oFocusedDate.isAfter(this._oMaxDate)){
			this._oFocusedDate = new CalendarDate(this._oMaxDate, sCalendarType);
		}

	}
@returns {boolean} if there are two months in two columns
@private