Returns the rect that is defined by the inputed date.
        
        :return     <QRectF>

def dateRect( self, date ):
        """
        Returns the rect that is defined by the inputed date.
        
        :return     <QRectF>
        """
        data = self._dateGrid.get(date.toJulianDay())
        if ( data ):
            return QRectF(data[1])
        return QRectF()