prozorro_sale.jobber.packages.announcement.utils

        # todo: make similar calculation as auction start date above
        duration_str = build_duration_str(duration_data)
        start_from = datetime.now()
        end_time = None
        local_tz = get_app_tz()
        if "days" in duration_str:
            # business requirements do not include the day which is now
            start_from_offset = timedelta(days=1)
            start_from = start_from + start_from_offset
            # valid time to start auction; procedure service overwrite it by itself into correct time
            end_time = "12:00"