{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.25,"best_label":"good","best_window":"20:45\u201302:00","dark_hours":8.96,"date":"2032-09-26","moon_free_dark_hours":3.88,"moon_illumination":45,"moon_separation":135.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"21:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.25,"best_label":"good","best_window":"20:45\u201302:00","dark_hours":9.01,"date":"2032-09-27","moon_free_dark_hours":4.83,"moon_illumination":35,"moon_separation":140.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.25,"best_label":"good","best_window":"20:40\u201301:55","dark_hours":9.06,"date":"2032-09-28","moon_free_dark_hours":5.82,"moon_illumination":26,"moon_separation":142.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.25,"best_label":"good","best_window":"20:40\u201301:55","dark_hours":9.11,"date":"2032-09-29","moon_free_dark_hours":6.77,"moon_illumination":18,"moon_separation":142.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"20:40\u201301:50","dark_hours":9.16,"date":"2032-09-30","moon_free_dark_hours":7.75,"moon_illumination":12,"moon_separation":138.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.17,"best_label":"good","best_window":"20:35\u201301:45","dark_hours":9.21,"date":"2032-10-01","moon_free_dark_hours":8.72,"moon_illumination":6,"moon_separation":132.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.08,"best_label":"good","best_window":"20:35\u201301:40","dark_hours":9.25,"date":"2032-10-02","moon_free_dark_hours":9.23,"moon_illumination":2,"moon_separation":125.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.08,"best_label":"good","best_window":"20:35\u201301:40","dark_hours":9.3,"date":"2032-10-03","moon_free_dark_hours":9.28,"moon_illumination":0,"moon_separation":116.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.08,"best_label":"good","best_window":"20:30\u201301:35","dark_hours":9.35,"date":"2032-10-04","moon_free_dark_hours":9.33,"moon_illumination":0,"moon_separation":107.4,"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":9.39,"date":"2032-10-05","moon_free_dark_hours":9.38,"moon_illumination":2,"moon_separation":97.7,"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":9.44,"date":"2032-10-06","moon_free_dark_hours":9.43,"moon_illumination":5,"moon_separation":87.8,"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":9.49,"date":"2032-10-07","moon_free_dark_hours":9.47,"moon_illumination":11,"moon_separation":77.8,"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":4.92,"best_label":"good","best_window":"20:25\u201301:20","dark_hours":9.53,"date":"2032-10-08","moon_free_dark_hours":8.8,"moon_illumination":18,"moon_separation":67.8,"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":9.58,"date":"2032-10-09","moon_free_dark_hours":8.0,"moon_illumination":27,"moon_separation":58.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"20:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.83,"best_label":"good","best_window":"20:20\u201301:10","dark_hours":9.62,"date":"2032-10-10","moon_free_dark_hours":7.1,"moon_illumination":37,"moon_separation":49.4,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":71.1,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.75,"best_label":"good","best_window":"20:20\u201301:05","dark_hours":9.67,"date":"2032-10-11","moon_free_dark_hours":6.12,"moon_illumination":47,"moon_separation":42.2,"score":null,"score_astronomy":85,"score_weather":null,"transit_alt":71.1,"transit_local":"20:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.33,"best_label":"good","best_window":"20:20\u201300:40","dark_hours":9.71,"date":"2032-10-12","moon_free_dark_hours":5.03,"moon_illumination":59,"moon_separation":37.7,"score":null,"score_astronomy":60,"score_weather":null,"transit_alt":71.1,"transit_local":"19:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.08,"best_label":"marginal","best_window":"20:15\u201301:20","dark_hours":9.76,"date":"2032-10-13","moon_free_dark_hours":3.92,"moon_illumination":70,"moon_separation":37.4,"score":null,"score_astronomy":45,"score_weather":null,"transit_alt":71.1,"transit_local":"19:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.92,"best_label":"marginal","best_window":"20:15\u201301:10","dark_hours":9.8,"date":"2032-10-14","moon_free_dark_hours":2.75,"moon_illumination":80,"moon_separation":41.5,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":71.1,"transit_local":"19:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.67,"best_label":"marginal","best_window":"20:15\u201300:55","dark_hours":9.84,"date":"2032-10-15","moon_free_dark_hours":1.57,"moon_illumination":88,"moon_separation":49.3,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":71.1,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.58,"best_label":"marginal","best_window":"20:15\u201300:50","dark_hours":9.89,"date":"2032-10-16","moon_free_dark_hours":0.37,"moon_illumination":95,"moon_separation":59.1,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":71.1,"transit_local":"19:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.0,"best_label":"good","best_window":"20:10\u201321:10","dark_hours":9.93,"date":"2032-10-17","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":70.2,"score":null,"score_astronomy":43,"score_weather":null,"transit_alt":71.1,"transit_local":"19:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.17,"best_label":"good","best_window":"20:10\u201322:20","dark_hours":9.97,"date":"2032-10-18","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":81.7,"score":null,"score_astronomy":54,"score_weather":null,"transit_alt":71.1,"transit_local":"19:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.25,"best_label":"good","best_window":"20:10\u201323:25","dark_hours":10.01,"date":"2032-10-19","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":93.3,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":71.1,"transit_local":"19:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.08,"best_label":"good","best_window":"20:05\u201300:10","dark_hours":10.06,"date":"2032-10-20","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":104.5,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":71.1,"transit_local":"19:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.17,"best_label":"good","best_window":"20:05\u201300:15","dark_hours":10.1,"date":"2032-10-21","moon_free_dark_hours":0.62,"moon_illumination":88,"moon_separation":115.1,"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":10.14,"date":"2032-10-22","moon_free_dark_hours":1.5,"moon_illumination":80,"moon_separation":124.6,"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":4.08,"best_label":"good","best_window":"20:05\u201300:10","dark_hours":10.18,"date":"2032-10-23","moon_free_dark_hours":2.42,"moon_illumination":71,"moon_separation":132.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.17,"best_label":"good","best_window":"20:00\u201300:10","dark_hours":10.22,"date":"2032-10-24","moon_free_dark_hours":3.4,"moon_illumination":62,"moon_separation":139.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.17,"best_label":"good","best_window":"20:00\u201300:10","dark_hours":10.26,"date":"2032-10-25","moon_free_dark_hours":4.35,"moon_illumination":52,"moon_separation":142.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"19:05","verdict":"unknown","weather_source":"none","weekday":"Mon"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2032-09-26","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}}