{
  "context": "Evaluates how well the solution uses temporal-polyfill's ZonedDateTime APIs to retime events across zones, adjust local clock values, and reason about daylight-saving-sensitive day boundaries. Points emphasize direct use of the library's zone-aware operations rather than manual math.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Zone conversion",
      "description": "Builds a ZonedDateTime from the ISO input and uses withTimeZone (not manual offset math) to express the same instant in the target zone before returning an ISO string.",
      "max_score": 30
    },
    {
      "name": "Clock replacement",
      "description": "For replacing the local time, calls withPlainTime on the existing ZonedDateTime using the provided HH:mm[:ss] string so the date and zone stay fixed.",
      "max_score": 25
    },
    {
      "name": "Day start",
      "description": "Computes the start of the local day via the startOfDay ZonedDateTime helper rather than reconstructing timestamps manually.",
      "max_score": 20
    },
    {
      "name": "Day length",
      "description": "Reports the calendar day's duration using the hoursInDay property on the ZonedDateTime, capturing 23/24/25-hour cases without custom calculations.",
      "max_score": 15
    },
    {
      "name": "Parsing & output",
      "description": "Leverages Temporal.ZonedDateTime.from for ISO parsing and returns results using the object's toString()/toJSON output instead of string concatenation.",
      "max_score": 10
    }
  ]
}