code: def _nextOn(self, request):
          
          retval = None
          nextDt, event = self.__localAfterOrPostponedTo(timezone.localtime(),
                                                         dt.time.min)
          if nextDt is not None:
              timeFrom = nextDt.time() if event.time_from is not None else None
              retval = "{} {}".format(dateFormat(nextDt.date()),
                                      timeFormat(timeFrom, prefix=gettext("at ")))
              if event is not self and event.isAuthorized(request):
                  retval = format_html('<a class="inline-link" href="{}">{}</a>',
                                       event.url, retval)
          return retval
docs: Formatted date/time of when this event (including any postponements)
          will next be on