Alberta stopped changing its clocks in June. 19 of 19 frontier models still put Calgary on standard time in November.

说明与用途

模型错误地给出了2026年11月15日加利福尼亚9点时的多伦多时间。正确答案是10点。

问题

Determine the correct local time in Toronto when it is 9 a.m. on November 15 in Calgary after Alberta ceased daylight‑saving time in 2026.

结果

All 19 models answered incorrectly, giving 11:00 instead of the correct 10:00. The benchmark demonstrates that models lack up‑to‑date knowledge of recent time‑zone changes.

工作流

• 1. Identify the date and location: 9 a.m. on 15 Nov 2026 in Calgary.
• 2. Consult the IANA tzdata 2026d release to get Calgary’s UTC offset (‑06:00).
• 3. Convert 9 a.m. Calgary time to UTC: 3 p.m. UTC.
• 4. Apply Toronto’s UTC offset (‑05:00) to UTC time: 10 a.m. Toronto time.
• 5. Verify with Python’s zoneinfo or a reliable time‑zone API.
• 6. Record the answer as 10:00.
• 7. Compare model outputs to the correct answer to assess accuracy.

证据

All 19 said 11:00. The answer is 10:00.

来源

The Calgary offset question is the one I would put in front of a judge, because it cannot be right by accident. Calgary at noon on November 15, 2026 is -06:00. All 19 models said -07:00.

来源