python - How to convert Django's TimeField to Postgres' timestamp with time zone -

in django app, program gets time of event user, user inputs 10:30 time of event. program uses modelformset_factory create whole bunch of forms:

#forms.py class eventform(modelform):     class meta:         model = event         fields = ['entry', 'time', 'work']         localized_fields = ('time', )         widgets = {         'work': textarea(attrs = {'cols': 40, 'rows': 8}),         }  #models.py class event(models.model):     '''     each day there many events, e.g. @ 10 am, framer orders material, etc.     '''     entry = models.foreignkey(entry)     time = models.timefield()     work = models.textfield()   #views.py:  eventformset = modelformset_factory( event, form = eventform, exclude = ('entry',),extra = 5)  eventset = self.eventformset(request.post)  all_errors = eventset.errors # errors returns [{}, {}, {}, {}, {}], data free of error. try:     eventset.is_valid()              except validationerror:     return render(request, self.template_name, {'form': self.day_log(initial = self.initial_values), 'eventforms': self.event_formset}) events_instances = eventset.save(commit = false)  instance in events_instances:     if instance.time:         event_date = datetime.date(the_year, the_month, the_day) # naive date         event_time = instance.time # naive time         naive_event_time = timezone.is_naive(event_time) # checking naivaty          event_datetime = datetime.datetime.combine(event_date, event_time) # naive datetime object         is_aware_event_datetime = timezone.is_aware(event_datetime) # checking see if datetime object aware or naive         event_aware_datetime = datetime.datetime(the_year, the_month, the_day, instance.time.hour, instance.time.minute, instance.time.second, tzinfo = pytz.utc) # making aware time         is_aware_event_aware_datetime = timezone.is_aware(event_aware_datetime) # making sure event_aware_datetime indeed aware         instance.time = event_aware_datetime         awareness_test = timezone.is_aware(instance.time) # making sure instance.time aware         eventset.save()  # here exception thrown. 

the django app fails save time data postgres. exception type dataerror exception value:

invalid input syntax type timestamp time zone:  line 1: ...y_event" ("entry_id", "time", "work") values (14, '18:43:04.... 

with ^ pointing @ ' of '18:

edit: here database:

create table site_activity_event (     id serial not null,     entry_id integer not null,     "time" time without time zone not null,      work text not null,      constraint site_activity_event_pkey primary key (id),      constraint site_activity_event_entry_id_fkey foreign key (entry_id)         references site_activity_entry (id) match simple         on update no action on delete no action deferrable deferred     ) 

i did sqlall app ensure data type of model field correspond of app , there. seems postgres issue, django supposed take care of pesky interface issues postgres (https://docs.djangoproject.com/en/1.8/topics/i18n/timezones/#migration-guide), makes me think missing something. appreciated.

well, "18:43:04" valid timestamp timezone? think specifies unique point in time? if have uncovered major bug in postgresql's date/time handling. if not, should either supply valid timestamp or use correct type in database - can't without knowing more these events.