from zoneinfo import ZoneInfo
keys = {datetime.fromisoformat(value).astimezone(ZoneInfo(data['timezone'])).date().isoformat() for value in data['triggers']}
check('两个不同时区偏移的触发归入同一业务日', keys == {'2026-11-01'})
result = {'unique_report_count': len(keys), 'report_keys': sorted(keys), 'explanation': output}
