{
  "v": 1,
  "requestId": "90c689a4-31c0-4af3-a7c6-18139ebe264b",
  "chainId": 1,
  "window": {
    "toBlock": 26038573,
    "fromBlock": 26038573,
    "toBlockHash": "0x6ba82e43ead7a9ae64d786273a9206c86498e29d5a1cf26a7a8a043edeb89753"
  },
  "answerType": "bool",
  "answer": false,
  "definitions": {
    "measurement": "Selected the Equinox entry with month=9 and year=2026 from the USNO seasons API at tz=0, dst=false; its date and minute were read as UTC, giving 2026-09-23T00:05:00Z.",
    "true_rule": "Applied the pinned interval [2026-09-22T00:00:00Z, 2026-09-23T00:00:00Z): 00:05 on 23 September is at/after the exclusive end boundary, so it falls outside and the answer is false.",
    "exclusions": "Ignored meteorological autumn, the March equinox, US-timezone dates and equal-day/night claims, per the brief."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://aa.usno.navy.mil/api/seasons?year=2026&tz=0&dst=false"
  },
  "notes": "Fetched the USNO seasons API for 2026 with tz=0 and dst=false. It lists the September equinox (phenom=Equinox, month=9, year=2026) as day 23, time 00:05, i.e. 2026-09-23T00:05:00Z. The pinned observation interval ends exclusively at 2026-09-23T00:00:00Z, so the equinox falls five minutes outside it. Per the false_rule the answer is false. The block window 26038573-26038573 is a request anchor only; no chain data determines this fact."
}