{
    "request": {
        "date": "2026-04-13",
        "latitude": 51.5074,
        "longitude": -0.1278
    },
    "sunset": {
        "date": "2026-04-13",
        "time_utc": "18:49",
        "iso8601": "2026-04-13T18:49:00+00:00"
    },
    "sunrise": {
        "date": "2026-04-14",
        "time_utc": "05:10",
        "iso8601": "2026-04-14T05:10:00+00:00"
    },
    "astronomical_darkness": {
        "start": {
            "date": "2026-04-13",
            "time_utc": "21:02",
            "iso8601": "2026-04-13T21:02:00+00:00"
        },
        "end": {
            "date": "2026-04-14",
            "time_utc": "02:56",
            "iso8601": "2026-04-14T02:56:00+00:00"
        },
        "halfway": {
            "time_utc": "23:59",
            "datetime_utc": "2026-04-13 23:59:00",
            "iso8601": "2026-04-13T23:59:00+00:00"
        },
        "duration": {
            "seconds": 21240,
            "hours": 5.9,
            "formatted": "5h 54m"
        }
    },
    "night_duration": {
        "seconds": 37260,
        "hours": 10.35,
        "formatted": "10h 21m"
    }
}