{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.08,"best_label":"good","best_window":"20:30\u201301:35","dark_hours":9.36,"date":"2043-10-05","moon_free_dark_hours":9.35,"moon_illumination":7,"moon_separation":88.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.0,"best_label":"good","best_window":"20:30\u201301:30","dark_hours":9.41,"date":"2043-10-06","moon_free_dark_hours":9.38,"moon_illumination":13,"moon_separation":80.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.92,"best_label":"good","best_window":"20:30\u201301:25","dark_hours":9.46,"date":"2043-10-07","moon_free_dark_hours":9.25,"moon_illumination":20,"moon_separation":72.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.92,"best_label":"good","best_window":"20:25\u201301:20","dark_hours":9.5,"date":"2043-10-08","moon_free_dark_hours":8.63,"moon_illumination":28,"moon_separation":65.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.83,"best_label":"good","best_window":"20:25\u201301:15","dark_hours":9.55,"date":"2043-10-09","moon_free_dark_hours":7.85,"moon_illumination":37,"moon_separation":58.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.83,"best_label":"good","best_window":"20:25\u201301:15","dark_hours":9.59,"date":"2043-10-10","moon_free_dark_hours":6.95,"moon_illumination":46,"moon_separation":52.6,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":71.1,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.83,"best_label":"good","best_window":"20:20\u201301:10","dark_hours":9.64,"date":"2043-10-11","moon_free_dark_hours":5.92,"moon_illumination":56,"moon_separation":48.4,"score":null,"score_astronomy":84,"score_weather":null,"transit_alt":71.1,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.33,"best_label":"good","best_window":"20:20\u201300:40","dark_hours":9.68,"date":"2043-10-12","moon_free_dark_hours":4.8,"moon_illumination":66,"moon_separation":46.3,"score":null,"score_astronomy":61,"score_weather":null,"transit_alt":71.1,"transit_local":"20:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.08,"best_label":"good","best_window":"20:20\u201322:25","dark_hours":9.73,"date":"2043-10-13","moon_free_dark_hours":3.63,"moon_illumination":75,"moon_separation":46.8,"score":null,"score_astronomy":49,"score_weather":null,"transit_alt":71.1,"transit_local":"19:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.0,"best_label":"marginal","best_window":"20:15\u201301:15","dark_hours":9.77,"date":"2043-10-14","moon_free_dark_hours":2.45,"moon_illumination":84,"moon_separation":50.0,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":71.1,"transit_local":"19:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.75,"best_label":"marginal","best_window":"20:15\u201301:00","dark_hours":9.82,"date":"2043-10-15","moon_free_dark_hours":1.27,"moon_illumination":91,"moon_separation":55.8,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":71.1,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.17,"best_label":"good","best_window":"20:15\u201320:25","dark_hours":9.86,"date":"2043-10-16","moon_free_dark_hours":0.05,"moon_illumination":96,"moon_separation":63.5,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":71.1,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"20:10\u201321:35","dark_hours":9.9,"date":"2043-10-17","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":72.6,"score":null,"score_astronomy":46,"score_weather":null,"transit_alt":71.1,"transit_local":"19:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.33,"best_label":"good","best_window":"20:10\u201322:30","dark_hours":9.94,"date":"2043-10-18","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":82.6,"score":null,"score_astronomy":56,"score_weather":null,"transit_alt":71.1,"transit_local":"19:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.33,"best_label":"good","best_window":"20:10\u201323:30","dark_hours":9.99,"date":"2043-10-19","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":93.0,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":71.1,"transit_local":"19:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.0,"best_label":"good","best_window":"20:10\u201300:10","dark_hours":10.03,"date":"2043-10-20","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":103.2,"score":null,"score_astronomy":81,"score_weather":null,"transit_alt":71.1,"transit_local":"19:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.17,"best_label":"good","best_window":"20:05\u201300:15","dark_hours":10.07,"date":"2043-10-21","moon_free_dark_hours":0.3,"moon_illumination":84,"moon_separation":112.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.25,"best_label":"good","best_window":"20:05\u201300:20","dark_hours":10.11,"date":"2043-10-22","moon_free_dark_hours":1.3,"moon_illumination":74,"moon_separation":121.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.17,"best_label":"good","best_window":"20:05\u201300:15","dark_hours":10.15,"date":"2043-10-23","moon_free_dark_hours":2.45,"moon_illumination":63,"moon_separation":128.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.25,"best_label":"good","best_window":"20:00\u201300:15","dark_hours":10.19,"date":"2043-10-24","moon_free_dark_hours":3.7,"moon_illumination":52,"moon_separation":132.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.25,"best_label":"good","best_window":"19:00\u201323:15","dark_hours":10.23,"date":"2043-10-25","moon_free_dark_hours":4.95,"moon_illumination":41,"moon_separation":133.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"18:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.17,"best_label":"good","best_window":"19:00\u201323:10","dark_hours":10.27,"date":"2043-10-26","moon_free_dark_hours":6.17,"moon_illumination":31,"moon_separation":132.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"18:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.08,"best_label":"good","best_window":"19:00\u201323:05","dark_hours":10.31,"date":"2043-10-27","moon_free_dark_hours":7.33,"moon_illumination":22,"moon_separation":128.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"18:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.08,"best_label":"good","best_window":"18:55\u201323:00","dark_hours":10.35,"date":"2043-10-28","moon_free_dark_hours":8.43,"moon_illumination":14,"moon_separation":122.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.08,"best_label":"good","best_window":"18:55\u201323:00","dark_hours":10.39,"date":"2043-10-29","moon_free_dark_hours":9.52,"moon_illumination":8,"moon_separation":115.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.0,"best_label":"good","best_window":"18:55\u201322:55","dark_hours":10.42,"date":"2043-10-30","moon_free_dark_hours":10.4,"moon_illumination":3,"moon_separation":107.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.92,"best_label":"good","best_window":"18:55\u201322:50","dark_hours":10.46,"date":"2043-10-31","moon_free_dark_hours":10.43,"moon_illumination":1,"moon_separation":99.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.92,"best_label":"good","best_window":"18:50\u201322:45","dark_hours":10.5,"date":"2043-11-01","moon_free_dark_hours":10.48,"moon_illumination":0,"moon_separation":91.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.92,"best_label":"good","best_window":"18:50\u201322:45","dark_hours":10.53,"date":"2043-11-02","moon_free_dark_hours":10.52,"moon_illumination":1,"moon_separation":82.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"17:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.83,"best_label":"good","best_window":"18:50\u201322:40","dark_hours":10.57,"date":"2043-11-03","moon_free_dark_hours":10.55,"moon_illumination":4,"moon_separation":74.8,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":71.1,"transit_local":"17:30","verdict":"unknown","weather_source":"none","weekday":"Tue"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2043-10-05","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}}
