def format_time(self, time=None, format=None, rebase=True):
        format = self._get_format('time', format)

        kwargs = {}
        if rebase:
            kwargs['tzinfo'] = self.tzinfo

        return dates.format_time(time, format, locale=self.locale, **kwargs)
Should be an idempotent operation on the aggregates.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webapp2-2.3/webapp2_extras/i18n.py/I18n.format_time--crossover with--dataset/ETHPy150Open fp7-ofelia/ocf/expedient/src/python/expedient/clearinghouse/slice/models.py/Slice.start