def getModificationDeadline(self):
        """Returns the deadline for modifications on the submitted abstracts.
        """
        try:
            if self._modifDeadline:
                pass
        except AttributeError, e:
            self._modifDeadline = None
        if self._modifDeadline is not None:
            return timezone(self.getTimezone()).localize(self._modifDeadline)
        else:
            return None