{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.33,"best_label":"good","best_window":"01:35\u201303:55","dark_hours":5.15,"date":"2032-05-23","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":82.3,"score":null,"score_astronomy":53,"score_weather":null,"transit_alt":71.1,"transit_local":"05:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.42,"best_label":"good","best_window":"02:30\u201303:55","dark_hours":5.1,"date":"2032-05-24","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":71.6,"score":null,"score_astronomy":44,"score_weather":null,"transit_alt":71.1,"transit_local":"05:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.0,"best_label":"marginal","best_window":"23:50\u201303:50","dark_hours":5.06,"date":"2032-05-25","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":61.1,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":71.1,"transit_local":"05:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.08,"best_label":"marginal","best_window":"23:45\u201303:50","dark_hours":5.01,"date":"2032-05-26","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":51.4,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.17,"best_label":"marginal","best_window":"23:40\u201303:50","dark_hours":4.97,"date":"2032-05-27","moon_free_dark_hours":0.27,"moon_illumination":90,"moon_separation":43.3,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.42,"best_label":"marginal","best_window":"23:25\u201303:50","dark_hours":4.93,"date":"2032-05-28","moon_free_dark_hours":1.02,"moon_illumination":82,"moon_separation":38.1,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":71.1,"transit_local":"04:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.0,"best_label":"good","best_window":"23:50\u201303:50","dark_hours":4.89,"date":"2032-05-29","moon_free_dark_hours":1.68,"moon_illumination":72,"moon_separation":37.2,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":71.1,"transit_local":"04:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.0,"best_label":"good","best_window":"23:45\u201303:45","dark_hours":4.85,"date":"2032-05-30","moon_free_dark_hours":2.27,"moon_illumination":61,"moon_separation":40.8,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":71.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.08,"best_label":"good","best_window":"23:40\u201303:45","dark_hours":4.81,"date":"2032-05-31","moon_free_dark_hours":2.82,"moon_illumination":49,"moon_separation":47.9,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":71.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.08,"best_label":"good","best_window":"23:40\u201303:45","dark_hours":4.78,"date":"2032-06-01","moon_free_dark_hours":3.35,"moon_illumination":38,"moon_separation":56.9,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":71.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.17,"best_label":"good","best_window":"23:35\u201303:45","dark_hours":4.74,"date":"2032-06-02","moon_free_dark_hours":3.88,"moon_illumination":28,"moon_separation":67.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.25,"best_label":"good","best_window":"23:30\u201303:45","dark_hours":4.71,"date":"2032-06-03","moon_free_dark_hours":4.43,"moon_illumination":18,"moon_separation":77.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.25,"best_label":"good","best_window":"23:25\u201303:40","dark_hours":4.68,"date":"2032-06-04","moon_free_dark_hours":4.65,"moon_illumination":11,"moon_separation":88.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.33,"best_label":"good","best_window":"23:20\u201303:40","dark_hours":4.65,"date":"2032-06-05","moon_free_dark_hours":4.63,"moon_illumination":5,"moon_separation":99.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.33,"best_label":"good","best_window":"23:20\u201303:40","dark_hours":4.62,"date":"2032-06-06","moon_free_dark_hours":4.6,"moon_illumination":1,"moon_separation":109.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.59,"date":"2032-06-07","moon_free_dark_hours":4.57,"moon_illumination":0,"moon_separation":119.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.57,"date":"2032-06-08","moon_free_dark_hours":4.55,"moon_illumination":1,"moon_separation":127.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.54,"date":"2032-06-09","moon_free_dark_hours":4.52,"moon_illumination":4,"moon_separation":135.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.52,"date":"2032-06-10","moon_free_dark_hours":4.52,"moon_illumination":8,"moon_separation":140.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.5,"date":"2032-06-11","moon_free_dark_hours":4.48,"moon_illumination":14,"moon_separation":142.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"04:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.49,"date":"2032-06-12","moon_free_dark_hours":3.93,"moon_illumination":22,"moon_separation":142.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.47,"date":"2032-06-13","moon_free_dark_hours":3.45,"moon_illumination":30,"moon_separation":138.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.46,"date":"2032-06-14","moon_free_dark_hours":2.98,"moon_illumination":39,"moon_separation":132.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.45,"date":"2032-06-15","moon_free_dark_hours":2.53,"moon_illumination":48,"moon_separation":124.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.44,"date":"2032-06-16","moon_free_dark_hours":2.07,"moon_illumination":58,"moon_separation":116.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.43,"date":"2032-06-17","moon_free_dark_hours":1.57,"moon_illumination":67,"moon_separation":106.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.43,"date":"2032-06-18","moon_free_dark_hours":1.03,"moon_illumination":76,"moon_separation":96.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.42,"date":"2032-06-19","moon_free_dark_hours":0.42,"moon_illumination":85,"moon_separation":86.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.75,"best_label":"good","best_window":"23:55\u201303:40","dark_hours":4.42,"date":"2032-06-20","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":75.8,"score":null,"score_astronomy":73,"score_weather":null,"transit_alt":71.1,"transit_local":"03:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.58,"best_label":"good","best_window":"01:05\u201303:40","dark_hours":4.42,"date":"2032-06-21","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":65.2,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":71.1,"transit_local":"03:20","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":"2032-05-23","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}}