{
  "version": "1.0.0",
  "limitations": [
    "Calculated geometric solar events, not measured illuminance or a forecast of when an individual will perceive darkness.",
    "Only the six disclosed city-centre coordinates and the calendar year 2026; no global or future-year guarantee.",
    "Zero observer height and an unobstructed mathematical horizon. Real terrain, buildings, elevation and atmospheric refraction can shift visible sunset.",
    "Clouds, haze, moonlight, artificial light and dark adaptation are not modelled; astronomical twilight ending is not a guarantee of a black sky or visible Milky Way.",
    "CSV sub-minute precision supports reproduction, not observational accuracy.",
    "Full-table Python reproduction uses the same equations as SunCalc. The separate NOAA/Meeus check covers only 24 city/date samples.",
    "No legal, aviation, navigation, hiking-safety or exposure-setting cutoff is inferred from these thresholds.",
    "SunCalc version, coordinates and year are frozen; corrections require a new version with a change note."
  ],
  "corrections": "https://sunsettoday.app/contact"
}