{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.92,"best_label":"good","best_window":"18:35\u201321:30","dark_hours":11.09,"date":"2035-11-20","moon_free_dark_hours":3.73,"moon_illumination":64,"moon_separation":139.4,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":71.1,"transit_local":"16:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.92,"best_label":"good","best_window":"18:35\u201321:30","dark_hours":11.11,"date":"2035-11-21","moon_free_dark_hours":4.88,"moon_illumination":53,"moon_separation":135.6,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":71.1,"transit_local":"16:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.83,"best_label":"good","best_window":"18:35\u201321:25","dark_hours":11.14,"date":"2035-11-22","moon_free_dark_hours":6.0,"moon_illumination":42,"moon_separation":129.0,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":71.1,"transit_local":"16:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.75,"best_label":"good","best_window":"18:35\u201321:20","dark_hours":11.16,"date":"2035-11-23","moon_free_dark_hours":7.1,"moon_illumination":32,"moon_separation":120.8,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":71.1,"transit_local":"16:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.67,"best_label":"good","best_window":"18:35\u201321:15","dark_hours":11.19,"date":"2035-11-24","moon_free_dark_hours":8.17,"moon_illumination":22,"moon_separation":111.6,"score":null,"score_astronomy":69,"score_weather":null,"transit_alt":71.1,"transit_local":"16:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.58,"best_label":"good","best_window":"18:35\u201321:10","dark_hours":11.21,"date":"2035-11-25","moon_free_dark_hours":9.22,"moon_illumination":15,"moon_separation":102.1,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":71.1,"transit_local":"16:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.58,"best_label":"good","best_window":"18:35\u201321:10","dark_hours":11.23,"date":"2035-11-26","moon_free_dark_hours":10.25,"moon_illumination":8,"moon_separation":92.4,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":71.1,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.5,"best_label":"good","best_window":"18:35\u201321:05","dark_hours":11.25,"date":"2035-11-27","moon_free_dark_hours":11.23,"moon_illumination":4,"moon_separation":82.9,"score":null,"score_astronomy":64,"score_weather":null,"transit_alt":71.1,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.42,"best_label":"good","best_window":"18:35\u201321:00","dark_hours":11.27,"date":"2035-11-28","moon_free_dark_hours":11.25,"moon_illumination":1,"moon_separation":73.6,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":71.1,"transit_local":"15:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.33,"best_label":"good","best_window":"18:35\u201320:55","dark_hours":11.29,"date":"2035-11-29","moon_free_dark_hours":11.28,"moon_illumination":0,"moon_separation":64.8,"score":null,"score_astronomy":61,"score_weather":null,"transit_alt":71.1,"transit_local":"15:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.33,"best_label":"good","best_window":"18:35\u201320:55","dark_hours":11.31,"date":"2035-11-30","moon_free_dark_hours":11.3,"moon_illumination":1,"moon_separation":56.7,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":71.1,"transit_local":"15:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.25,"best_label":"good","best_window":"18:35\u201320:50","dark_hours":11.33,"date":"2035-12-01","moon_free_dark_hours":11.32,"moon_illumination":4,"moon_separation":49.7,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":71.1,"transit_local":"15:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.17,"best_label":"good","best_window":"18:35\u201320:45","dark_hours":11.34,"date":"2035-12-02","moon_free_dark_hours":10.68,"moon_illumination":9,"moon_separation":44.2,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":71.1,"transit_local":"15:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.08,"best_label":"good","best_window":"18:35\u201320:40","dark_hours":11.36,"date":"2035-12-03","moon_free_dark_hours":9.87,"moon_illumination":15,"moon_separation":41.0,"score":null,"score_astronomy":48,"score_weather":null,"transit_alt":71.1,"transit_local":"15:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.92,"best_label":"good","best_window":"18:35\u201320:30","dark_hours":11.38,"date":"2035-12-04","moon_free_dark_hours":8.98,"moon_illumination":22,"moon_separation":40.4,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":71.1,"transit_local":"15:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.75,"best_label":"good","best_window":"18:35\u201320:20","dark_hours":11.39,"date":"2035-12-05","moon_free_dark_hours":8.07,"moon_illumination":30,"moon_separation":42.6,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":71.1,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.58,"best_label":"good","best_window":"18:35\u201320:10","dark_hours":11.4,"date":"2035-12-06","moon_free_dark_hours":7.12,"moon_illumination":39,"moon_separation":47.3,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.42,"best_label":"good","best_window":"18:35\u201320:00","dark_hours":11.42,"date":"2035-12-07","moon_free_dark_hours":6.15,"moon_illumination":49,"moon_separation":54.0,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":71.1,"transit_local":"15:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.83,"best_label":"good","best_window":"18:35\u201319:25","dark_hours":11.43,"date":"2035-12-08","moon_free_dark_hours":5.13,"moon_illumination":59,"moon_separation":62.1,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":71.1,"transit_local":"15:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.5,"best_label":"good","best_window":"18:35\u201319:05","dark_hours":11.44,"date":"2035-12-09","moon_free_dark_hours":4.1,"moon_illumination":69,"moon_separation":71.3,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"15:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.5,"best_label":"good","best_window":"18:35\u201319:05","dark_hours":11.45,"date":"2035-12-10","moon_free_dark_hours":3.03,"moon_illumination":78,"moon_separation":81.3,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.83,"best_label":"good","best_window":"18:35\u201319:25","dark_hours":11.46,"date":"2035-12-11","moon_free_dark_hours":1.92,"moon_illumination":87,"moon_separation":91.9,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":71.1,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.08,"best_label":"good","best_window":"18:35\u201319:40","dark_hours":11.47,"date":"2035-12-12","moon_free_dark_hours":0.73,"moon_illumination":93,"moon_separation":102.8,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":71.1,"transit_local":"15:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.48,"date":"2035-12-13","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":113.6,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":71.1,"transit_local":"14:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.48,"date":"2035-12-14","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":123.7,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":71.1,"transit_local":"14:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.49,"date":"2035-12-15","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":132.3,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"14:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.08,"best_label":"good","best_window":"18:35\u201319:40","dark_hours":11.5,"date":"2035-12-16","moon_free_dark_hours":0.35,"moon_illumination":94,"moon_separation":138.0,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"14:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.5,"date":"2035-12-17","moon_free_dark_hours":1.48,"moon_illumination":88,"moon_separation":139.7,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"14:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.08,"best_label":"good","best_window":"18:35\u201319:40","dark_hours":11.5,"date":"2035-12-18","moon_free_dark_hours":2.65,"moon_illumination":79,"moon_separation":136.9,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":71.1,"transit_local":"14:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.08,"best_label":"good","best_window":"18:35\u201319:40","dark_hours":11.51,"date":"2035-12-19","moon_free_dark_hours":3.8,"moon_illumination":69,"moon_separation":130.8,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":71.1,"transit_local":"14:30","verdict":"unknown","weather_source":"none","weekday":"Wed"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2035-11-20","target":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648}}